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New “corpse disposal” theory tested in William Tyrrell inquest

<p>A police theory that William Tyrrell's foster mother unlawfully disposed of the child's body after he died of an accident is set to be put before the court in an inquest into Tyrrell's disappearance. </p> <p>On Monday, counsel assisting Gerard Craddock SC reopened the inquest for a fifth round of evidence, saying the focus would be on the viability of the theory that William's body was purposefully disposed of. </p> <p>Police have alleged that after the then three-year-old died on the Kendall property on the mid-north NSW coast in September 2014, the foster mum might have loaded his body into her mother’s Mazda before driving down the road to dispose of his remains.</p> <p>Deputy NSW coroner Harriet Grahame heard in court that it was only then that she may have called triple zero to report the child missing. </p> <p>“Police assert that she must have quickly resolved that if the accidental death were to be discovered, she might lose (her other foster child),” Craddock said.</p> <p>Tyrrell's foster mother has long denied having any involvement with William's disappearance. </p> <p>Later in the inquest, evidence is set to be given from a truck driver who drove past where the foster mother allegedly disposed of the body at the time.</p> <p>The inquest into William’s disappearance began in March 2019 but was adjourned in October 2020.</p> <p>No one has been charged and a $1 million reward for information stands.</p> <p><em>Image credits: NSW Police</em></p>

Legal

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From eye exams to blood tests and surgery: how doctors use light to diagnose disease

<div class="theconversation-article-body"><em><a href="https://theconversation.com/profiles/matthew-griffith-1539353">Matthew Griffith</a>, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a></em></p> <p>You’re not feeling well. You’ve had a pounding headache all week, dizzy spells and have vomited up your past few meals.</p> <p>You visit your GP to get some answers and sit while they shine a light in your eyes, order a blood test and request some medical imaging.</p> <p>Everything your GP just did relies on light. These are just some of the optical technologies that have had an enormous impact in how we diagnose disease.</p> <h2>1. On-the-spot tests</h2> <p>Point-of-care diagnostics allow doctors to test patients on the spot and get answers in minutes, rather than sending samples to a lab for analysis.</p> <p>The “flashlight” your GP uses to view the inside of your eye (known as an <a href="https://medlineplus.gov/ency/article/003881.htm">ophthalmoscope</a>) is a great example. This allows doctors to detect abnormal blood flow in the eye, deformations of the cornea (the outermost clear layer of the eye), or swollen optical discs (a round section at the back of the eye where the nerve link to the brain begins). Swollen discs are a sign of elevated pressure inside your head (or in the worst case, a brain tumour) that could be <a href="https://www.hopkinsmedicine.org/health/conditions-and-diseases/headache/increased-intracranial-pressure-icp-headache">causing your headaches</a>.</p> <p>The invention of <a href="https://openmedscience.com/lighting-the-way-in-healthcare-the-transformative-role-of-lasers-in-medicine/">lasers and LEDs</a> has enabled many other miniaturised technologies to be provided at the bedside or clinic rather than in the lab.</p> <p><a href="https://theconversation.com/whats-a-pulse-oximeter-should-i-buy-one-to-monitor-covid-at-home-174457">Pulse oximetry</a> is a famous example, where a clip attached to your finger reports how well your blood is oxygenated. It does this by <a href="https://www.howequipmentworks.com/pulse_oximeter/">measuring</a> the different responses of oxygenated and de-oxygenated blood to different colours of light.</p> <p>Pulse oximetry is used at hospitals (and <a href="https://theconversation.com/whats-a-pulse-oximeter-should-i-buy-one-to-monitor-covid-at-home-174457">sometimes at home</a>) to monitor your respiratory and heart health. In hospitals, it is also a valuable tool for detecting <a href="https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(12)60107-X/fulltext">heart defects in babies</a>.</p> <h2>2. Looking at molecules</h2> <p>Now, back to that blood test. Analysing a small amount of your blood can diagnose <a href="https://theconversation.com/blood-tests-and-diagnosing-illness-what-can-blood-tell-us-about-whats-happening-in-our-body-80327">many different diseases</a>.</p> <p>A machine called an automated “full blood count analyser” tests for general markers of your health. This machine directs focused beams of light through blood samples held in small glass tubes. It counts the number of blood cells, determines their specific type, and reports the level of haemoglobin (the protein in red blood cells that distributes oxygen around your body). In minutes, this machine can provide a <a href="https://www.nuffieldhealth.com/article/inside-the-pathology-lab-what-happens-to-my-blood">snapshot</a> of your overall health.</p> <p>For more specific disease markers, blood serum is separated from the heavier cells by spinning in a rotating instrument called a centrifuge. The serum is then exposed to special chemical stains and enzyme assays that change colour depending on whether specific molecules, which may be the sign of a disease, are present.</p> <p>These colour changes can’t be detected with the naked eye. However, a light beam from an instrument called a <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5476943/#R88">spectrometer</a> can detect tiny amounts of these substances in the blood and determine if the biomarkers for diseases are present, and at what levels.</p> <h2>3. Medical imaging</h2> <p>Let’s re-visit those medical images your GP ordered. The development of fibre-optic technology, made famous for transforming high-speed digital communications (such as the NBN), allows light to get inside the body. The result? High-resolution optical imaging.</p> <p>A common example is an <a href="https://www.medicalnewstoday.com/articles/153737#risks-and-side-effects">endoscope</a>, where fibres with a tiny camera on the end are inserted into the body’s natural openings (such as your mouth or anus) to examine your gut or respiratory tracts.</p> <p>Surgeons can insert the same technology through tiny cuts to view the inside of the body on a video screen during <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9553337/">laparoscopic surgery</a> (also known as keyhole surgery) to diagnose and treat disease.</p> <h2>How about the future?</h2> <p>Progress in nanotechnology and a better understanding of the interactions of light with our tissues are leading to new light-based tools to help diagnose disease. These include:</p> <ul> <li> <p><a href="https://onlinelibrary.wiley.com/doi/full/10.1002/advs.201903441">nanomaterials</a> (materials on an extremely small scale, many thousands of times smaller than the width of a human hair). These are being used in next-generation sensors and new diagnostic tests</p> </li> <li> <p><a href="https://www.nature.com/articles/s41587-019-0045-y">wearable optical biosensors</a> the size of your fingernail can be included in devices such as watches, contact lenses or finger wraps. These devices allow non-invasive measurements of sweat, tears and saliva, in real time</p> </li> <li> <p>AI tools to analyse how blood serum scatters infrared light. This has allowed researchers to build a <a href="https://www.advancedsciencenews.com/powerful-diagnostic-approach-uses-light-to-detect-virtually-all-forms-of-cancer/">comprehensive database</a> of scatter patterns to detect <a href="https://onlinelibrary.wiley.com/doi/full/10.1002/aisy.202300006">any cancer</a></p> </li> <li> <p>a type of non-invasive imaging called <a href="https://www.ncbi.nlm.nih.gov/books/NBK554044/">optical coherence tomography</a> for more detailed imaging of the eye, heart and skin</p> </li> <li> <p>fibre optic technology to deliver a tiny microscope into the body on the <a href="https://www.uwa.edu.au/projects/microscope-in-a-needle">tip of a needle</a>.</p> </li> </ul> <p>So the next time you’re at the GP and they perform (or order) some tests, chances are that at least one of those tests depend on light to help diagnose disease.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/231379/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><a href="https://theconversation.com/profiles/matthew-griffith-1539353"><em>Matthew Griffith</em></a><em>, Associate Professor and ARC Future Fellow and Director, UniSA Microscopy and Microanalysis Facilities, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a></em></p> <p><em>Image credits: Shutterstock </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/from-eye-exams-to-blood-tests-and-surgery-how-doctors-use-light-to-diagnose-disease-231379">original article</a>.</em></p> </div>

Body

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Simon Dorante-Day calls for "four-way paternity test" to prove royal lineage

<p>Simon Dorante-Day has called for a "four-way paternity test" to prove his royal lineage, while also casting doubt on if Prince William and Prince Harry are actually sons of the monarch. </p> <p>The Queensland man, who has been claiming to be the secret son of King Charles and Queen Camilla since 2005, has called for an official DNA test to prove his claims in a lengthy Facebook post. </p> <p>Dorante-Day's post highlights a photo comparison of himself, King Charles and William and Harry as evidence supporting his demand for answers from the royal family. </p> <p>“This comparison of William, Myself, Charles, and Harry demonstrates something very clearly, there is no consistency. The fact that the left side of my face identically matches Charles whilst neither William nor Harry’s does, raises the obvious question, just who are Charles’s real sons?”</p> <p>"This is why my wife, Dr. Elvianna, and I believe a 4-way Paternity test is the only way to resolve this issue once and for all. The truth of the game that has been played by the Monarchy, the Government, and the Establishment for 58 years needs to be exposed."</p> <p>"It's not just what happened to me as a child, and what I remember from growing up in England, but it’s also what’s happened since to myself, my wife, and my children in Australia that supports our argument. These covert and illegitimate activities that are targeted towards us constantly are an attempt to stop us on this journey, nothing more. They will not succeed. They will only strengthen our argument and provides us with evidence to demonstrate what has occurred, in a court room, to judges."</p> <p>"My question to all of you is how will you truly react when you hear the truth of what has occurred? Would you still want them on the throne?"</p> <p>Dorante-Day was born in Portsmouth in the UK in 1966, and was adopted at just eight months old. According to his claims, his adoptive mother, who worked for Queen Elizabeth II confessed on her death bed that he was the son of Charles and Camilla.</p> <p><em>Image credits: Facebook</em></p>

Family & Pets

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Rare coin hidden for decades to fetch eye-watering sum

<p>Three sisters from the US who inherited a dime coin kept it in a bank vault for more than 40 years, and while they know it had some value, they didn't know just how much until a few years ago. </p> <p>The rare coin, struck by the US Mint in San Francisco in 1975, could be worth more than $US500,000 ($748,000), according to Ian Russell, president of GreatCollections, the auction house selling the coin. </p> <p>What makes the coin depicting President Franklin D. Roosevelt so valuable is that it is just one of two coins missing the "S" mint mark for San Francisco. </p> <p>The other dime sold for  $US682,000 (over $1 million) at a 2019 auction and then again months later to a private collector. </p> <p>While avid coin collectors have known about the existence of these two extraordinarily rare coins, their whereabouts had remained a mystery since the late 1970s. </p> <p>“They were hidden for decades,” Russell said.</p> <p>“Most major collectors and dealers have never seen one.”</p> <p>The three sisters from Ohio, who want to remain anonymous,  inherited one of the two dimes after the recent death of their of their brother, Russell said. </p> <p>They told Russell that their brother and mother bought the first error coin discovered in 1978 for $27,225, which would amount to roughly $135,000 today.</p> <p>Their parents, who ran a dairy farm, saw the coin as a financial safety net, and it was only until last year that one of the sisters saw the coin first-hand. </p> <p>Russell also said that their brother had reached out to him about seven years ago and told him about the coin, but he too kept it a secret. </p> <p>When Russell told one of the sisters about the potential value of the coin, she told him: “is that really possible?”. </p> <p>The coin, known as the “1975 ‘no S’ proof dime,” will be displayed at a coin show beginning on Wednesday in Tampa, Florida, and before <a href="https://www.greatcollections.com/Coin/1655587" target="_blank" rel="noopener">the auction</a> closes late next month, Russell said.</p> <p>The current highest bidder has offered $US250,000 ($374,000).</p> <p><em>Images: Great Collections/ Professional Coin Grading Services</em></p>

Money & Banking

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The eye-watering salaries of The Voice Australia judges revealed

<p><em>The Voice Australia</em> has revamped the lineup of the judges for the 2024 season, with American music icons Adam Lambert and LeAnn Rimes joining Aussies Guy Sebastian and Kate Miller-Heidke. </p> <p>As the new American talent joins the show, Seven are reportedly paying big buck for the international stars after their salaries were leaked by <a href="https://au.lifestyle.yahoo.com/exclusive-the-voice-australia-coaches-salaries-leaked-amid-pay-row-230921307.html" target="_blank" rel="noopener"><em>Yahoo News</em></a>. </p> <p>According to the publication, an alleged source claims that Adam and LeAnn "are believed to be receiving between $750,000 and $1.2 million" for the single season of the show. </p> <p>Meanwhile, Kate Miller-Heidke "is believed to be receiving upwards of $500,000" for her first season on the show. </p> <p>Veteran judge Guy Sebastian allegedly started on $750,000 per season in 2019, "but this is believed to now be worth $1 million". </p> <p>These new judges are getting "considerably less" than outgoing coaches Rita Ora and Jason Derulo, <em>Yahoo</em> alleges.</p> <p>According to a production insider, the reason for the switch-up of judges was the star's pay cheques, and a desire from producers to keep costs down.</p> <p>The insider said the program has been wanting a change in judges lineup for a quite some time, adding that salary increases are necessary to keep returning stars on the show and the price tag for the former crop was "too expensive".</p> <p>"The company line was that Jessica, Rita and Jason were all too busy, but I don't think anyone is too busy to pick up these sorts of pay cheques. It certainly did have a lot to do with keeping the costs down."</p> <p><em>Image credits: Seven </em></p>

TV

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The eye-watering cost of Karl Stefanovic's "highly secret" 50th birthday bash

<p>Karl Stefanovic had a "highly secretive" birthday party in Saint-Tropez. France, according to <em>Women's Day</em>. </p> <p>The <em>Today </em>host, who was in Paris to cover the Olympic games earlier this month, reportedly booked out an entire hotel for his 50th birthday bash. </p> <p>A source claimed that his party cost a staggering $200,000, with A-listers James Packer and Anthony Bell among the guests. </p> <p>"He'd be thinking you only turn 50 once so let's do this properly and go big!" the insider claimed. </p> <p>"Much like the $50,000 he dropped for (wife) Jasmine's 40th earlier this year, and the rumoured $10,000 birthday parties they have hosted for their four-year-old daughter Harper," they continued. </p> <p>"And then there was their $700,000 lavish Mexican nuptials - Karl has never done anything half-baked!" </p> <p>The party was allegedly 1970s themed, with Stefanovic's wife also showing off her new designer dresses.</p> <p>This comes after it was initially reported that Stefanovic was set to cancel his planned 50th birthday bash in Paris.</p> <p>Earlier this year, the <em>Today </em>host was reported to have spent a whopping $50,000 on his wife's lavish birthday celebrations in Noosa, according to the publication. </p> <p>Jasmine's entire look alone was worth an eye-watering $5,575, with her gown from Zimmermann costing $1,950. </p> <p>The party reportedly lasted for about two days, with a "recovery shindig" allegedly worth $10,000 also taking place. </p> <p>A close friend of the couple said at the time that "Karl is an old romantic" and was more than happy to treat his wife to a lavish birthday. </p> <p><em>Images: Instagram</em></p>

Money & Banking

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Kyle Sandilands finally reveals new eye-watering salary

<p>Kyle Sandilands has stunned listeners after candidly revealing his eye-watering salary live on air. </p> <p>Much speculation has swirled about the KIIS FM radio hosts' salaries after Kyle and Jackie O signed a new 10-year contract with the network, which was rumoured to cost $100 million. </p> <p>This figure would mean that Kyle and Jackie O would see an annual salary of $10 million, but Kyle revealed they are actually getting paid more than that. </p> <p>“I can’t live with the lie, it’s underreported," Kyle admitted on Friday morning. </p> <p>"It’s actually about another $50 million each,” he said, which means the pair will take home $15 million a year each.</p> <p>As Jackie protested at Kyle revealing their personal negotiations, Kyle continued, “I’m just saying, let’s cut through the bulls**t. And we get that because we’re good [at radio].”</p> <p>The new contract, which is said to be the biggest deal in Australian media history, will take <em>The Kyle and Jackie O Show</em> hosts to December 2034.</p> <p>The duo also have a clause in their contract that allows them to broadcast the show “anywhere on earth” at the drop of a hat.</p> <p>After revealing his astonishing salary on air, Kyle and his team began discussing the salaries of other popular radio stars in Australia.</p> <p>The show’s reporter Cooper Johns claimed that Hamish Blake and Andy Lee both make $4 million a year, while Brendan 'Fev' Fevola makes $1.2 million a year for his show on Fox FM in Melbourne.</p> <p>Meanwhile, 2GB’s Sydney breakfast host Ray Hadley is believed to be on a $3.5 million salary, WSFM’s Amanda Keller is reportedly on $2.5 million, and Carrie Bickmore is said to be making $1.5 million a year.</p> <p><em>Image credits: KIIS FM</em></p>

Money & Banking

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Lisa Curry recounts her Olympics "gender test" ordeal

<p>On Friday, the opening ceremony of the Paris Olympics will begin and swimming legend Lisa Curry has opened up about her own experiences competing in the games, and how she had to take a "gender test" in 1992.</p> <p>"Found this yesterday and thought it would be fun to do a show and tell of a few past stories leading up to Fridays Opening Ceremony of the 2024 Olympic Games in Paris," she shared on Instagram alongside a photo of the gender certificate she received. </p> <p>"This was a card given to all athletes competing in 1992 Barcelona after they completed a 'gender test'," she continued. </p> <p>"I wonder if they still do it?"</p> <p>Curry, 61, was one of the golden girls of Australian swimming, representing the nation at three Olympics during a career that spanned 23 years. </p> <p>The Olympian went on to explain that the man who signed her card was Alexandre de Merode, the head of the drug testing policy for the International Olympic Committee at the time. </p> <p>De Merode had a controversial career after he was involved in a number of Olympic drug scandals at Los Angeles in 1984 and Seoul in 1988. </p> <p>"This definitely surprised me… or does it?" Curry continued. </p> <p>"And it was at these Barcelona Games where we swam against the Chinese swimmers," she added. </p> <blockquote class="instagram-media" style="background: #FFF; border: 0; border-radius: 3px; box-shadow: 0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width: 540px; min-width: 326px; padding: 0; width: calc(100% - 2px);" data-instgrm-permalink="https://www.instagram.com/p/C9vefXRTlW8/?utm_source=ig_embed&amp;utm_campaign=loading" data-instgrm-version="14"> <div style="padding: 16px;"> <div style="display: flex; flex-direction: row; align-items: center;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 40px; margin-right: 14px; width: 40px;"> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 100px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 60px;"> </div> </div> </div> <div style="padding: 19% 0;"> </div> <div style="display: block; height: 50px; margin: 0 auto 12px; width: 50px;"> </div> <div style="padding-top: 8px;"> <div style="color: #3897f0; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: 550; line-height: 18px;">View this post on Instagram</div> </div> <div style="padding: 12.5% 0;"> </div> <div style="display: flex; flex-direction: row; margin-bottom: 14px; align-items: center;"> <div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(0px) translateY(7px);"> </div> <div style="background-color: #f4f4f4; height: 12.5px; transform: rotate(-45deg) translateX(3px) translateY(1px); width: 12.5px; flex-grow: 0; margin-right: 14px; margin-left: 2px;"> </div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(9px) translateY(-18px);"> </div> </div> <div style="margin-left: 8px;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 20px; width: 20px;"> </div> <div style="width: 0; height: 0; border-top: 2px solid transparent; border-left: 6px solid #f4f4f4; border-bottom: 2px solid transparent; transform: translateX(16px) translateY(-4px) rotate(30deg);"> </div> </div> <div style="margin-left: auto;"> <div style="width: 0px; border-top: 8px solid #F4F4F4; border-right: 8px solid transparent; transform: translateY(16px);"> </div> <div style="background-color: #f4f4f4; flex-grow: 0; height: 12px; width: 16px; transform: translateY(-4px);"> </div> <div style="width: 0; height: 0; border-top: 8px solid #F4F4F4; border-left: 8px solid transparent; transform: translateY(-4px) translateX(8px);"> </div> </div> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center; margin-bottom: 24px;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 224px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 144px;"> </div> </div> <p style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;"><a style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none;" href="https://www.instagram.com/p/C9vefXRTlW8/?utm_source=ig_embed&amp;utm_campaign=loading" target="_blank" rel="noopener">A post shared by Lisa Curry AO (@lisacurry)</a></p> </div> </blockquote> <p>In the early 1990s, the Chinese swimmers began to dominate the pool and eventually won a lot of medals, however they were also notorious for doping with more than 40 Chinese swimmers failing drug tests during the decade. </p> <p>In a <a href="https://www.instagram.com/p/C9yD4WSzdF-/" target="_blank" rel="noopener">follow up post</a>, Curry showed off a special ring that she still wears to commemorate the Olympics, and recalled her training back in 1992. </p> <p>"Morgan was a toddler when I competed in Barcelona and now when I’m looking after her babies, I remember the training, relentlessly, day in day out for the biggest moment of my life," she wrote. </p> <p>"Competing as a mum of 2, and being in the best shape of my life was my career highlight," she added. </p> <p>"This Olympic ring has been on my little finger for 32 years. It’s a reminder of the dedication, perseverance and resilience you need to keep going, even when you don’t have anything left in the tank." </p> <p>She then added a few words of encouragement for all the athletes competing in the Olympics, before adding: "Only some will win, but the opportunity you get to be an Olympian and call yourself an Olympian is forever."</p> <p><em><span style="font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;">Images: Instagram</span></em></p> <p> </p>

Body

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Doctor shares her holy grail tips for overcoming eye sensitivity

<p>As the chill of winter sets in, many people find that their eyes become more sensitive and prone to dryness. This can be particularly challenging for those who already suffer from dry eye syndrome. </p> <p>Dr. Jacqueline Beltz is a leading Australian Ophthalmologist and the founder of <a href="https://www.okkiyo.com" target="_blank" rel="noopener">OKKIYO</a>, a beauty brand that makes PRIORITEYES mascara for people with sensitive eyes.</p> <p>Dr Beltz has shared her insights into dry eye syndrome and how winter can exacerbate symptoms, also sharing her top tips for managing eye sensitivity during the colder months.</p> <p><strong>Understanding Dry Eye Syndrome</strong></p> <p>The surface of the eye is covered by a delicate layer of tears, essential for comfort, vision, protection, and nutrition. The tear film comprises two main layers: an outer lipid (oily) layer and an inner aqueous (watery) layer. The lipid layer, produced by oil glands in the eyelids, prevents tears from evaporating too quickly, while the aqueous layer, consisting of water, electrolytes, and proteins, spreads tears evenly across the eye and helps them adhere to the surface.</p> <p>When the balance of tear production, evaporation, absorption, and drainage is disrupted, it can lead to dry eye syndrome. Symptoms may include redness, irritation, a gritty sensation, tired eyes, itching, excessive watering, and fluctuating vision. In severe cases, dry eye can be painful and significantly impact daily life.</p> <p><strong>How common is dry eye syndrome?</strong></p> <p>Dry eye syndrome is a widespread issue, particularly among older adults. According to the Blue Mountains Eye Study, 57% of adults over the age of 50 experience some degree of dry eye. This condition is notably more prevalent in women, with higher rates observed compared to their male counterparts. The increased prevalence in women is often attributed to hormonal changes, particularly during and after menopause. </p> <p>A more recent study, Optometry Australia’s 2022 Vision index found that over 85% of Australians are estimated to have experienced dry eyes at some point in their lives.  Of those affected, 55% say they only developed the condition following the beginning of the pandemic in 2020.  They reported that almost 1 in 5 (18%) of people experience dry eye symptoms frequently.  </p> <p>These statistics highlight the importance of understanding and managing dry eye, especially as we age.</p> <p><strong>DEWS II Study and Treatment Approaches</strong></p> <p>The DEWS II (Dry Eye Workshop II) study provides a comprehensive framework for understanding and treating dry eye syndrome. According to the study, dry eye is a multifactorial disease characterised by a loss of homeostasis (or balance) in the tear film, accompanied by eye symptoms. Factors such as tear film instability, hyperosmolarity (increased saltiness), inflammation, and neurosensory (altered feelings or sensations) abnormalities play significant roles.</p> <p>There are two primary types of dry eye: aqueous deficient and evaporative. Most individuals have a combination of both. Aqueous deficient dry eye occurs when there is insufficient production of the watery layer of tears, often due to aging, hormonal changes, or certain medications. Evaporative dry eye is typically caused by environmental factors or conditions affecting the lipid layer, such as meibomian gland dysfunction (MGD).</p> <p><strong>Winter's Impact on Dry Eyes</strong></p> <p>Winter poses unique challenges for dry eye sufferers. Cold, dry air, indoor heating, and wind can all exacerbate symptoms. Here's how to combat these winter-specific issues:</p> <p><em><strong>1. Humidify Your Environment</strong></em></p> <p>Indoor heating reduces humidity levels, leading to increased tear evaporation. Consider using a humidifier to maintain moisture in the air, especially in bedrooms and living spaces. This helps keep your eyes hydrated.</p> <p><em><strong>2. Protect Your Eyes Outdoors</strong></em></p> <p>Cold winds can strip away the tear film. When outside, wear wraparound sunglasses to shield your eyes from the elements. This not only protects your eyes from the wind but also from UV rays, which can be strong even in winter.</p> <p><em><strong>3. Stay Hydrated</strong></em></p> <p>Dehydration can worsen dry eye symptoms. Drink plenty of water throughout the day to maintain overall hydration, which supports healthy tear production.</p> <p><em><strong>4. Optimise Your Diet</strong></em></p> <p>Certain foods can promote eye health. Omega-3 fatty acids, found in fish like salmon and flaxseeds, have anti-inflammatory properties that can help manage dry eye symptoms. Incorporate these into your diet for added benefits.</p> <p><em><strong>5. Use a Warm Compress</strong></em></p> <p>A warm compress can help improve the function of the meibomian glands, which produce the oily layer of the tear film. This is particularly helpful for those with meibomian gland dysfunction, or MGD. Gently apply a warm, damp cloth to your closed eyelids for 10-15 minutes, followed by a gentle massage of the eyelids to encourage oil secretion. It is important to avoid rubbing or compressing the eyeballs.</p> <p><em><strong>6. Use Over-the-Counter Lubricant Eye Drops</strong></em></p> <p>Artificial tears can provide temporary relief by supplementing the natural tear film. Choose preservative-free options to avoid further irritation, and use them frequently.</p> <p><em><strong>7.  Remember to have regular eye checks</strong></em></p> <p>In Australia, Optometrists provide our primary eye health check ups. Dr Beltz recommends adults over the age of 40 see their optometrist once a year, but if you’re struggling with symptoms of dry eye in winter, an extra check up might help and your optometrist will be able to help you to come up with an individualised treatment plan.</p> <p><em><strong>8. Invest in Quality Eye Products</strong></em></p> <p>For those who wear makeup, using products designed for sensitive eyes is crucial. <a href="https://www.okkiyo.com/products/protect-and-preserve-mascara" target="_blank" rel="noopener">PRIORITEYES</a> mascara by OKKIYO has been specifically formulated to be gentle on sensitive eyes, avoiding common irritants while providing excellent performance.</p> <p><strong>Managing Dry Eye in Winter: A Recap</strong></p> <p>Winter can be tough on our eyes, but with the right strategies, you can manage dry eye symptoms effectively. Maintain a humid environment, protect your eyes from cold winds, stay hydrated, and incorporate eye-healthy foods into your diet. Regularly use warm compresses and opt for gentle, high-quality eye products like PRIORITEYES mascara.  </p> <p>Dry eye syndrome may be a common condition, but it doesn't have to dominate your life, especially during the harsh winter months. With these tips, you can keep your eyes comfortable and healthy all season long. For personalised advice and treatment, always consult with your eye care professional.</p> <p>Stay warm, stay hydrated and take care of your eyes this winter!</p> <p><em>Image credits: Shutterstock </em></p>

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Advocates slam "ageist" call for older drivers to undergo mandatory testing

<p>A fresh push to make older drivers undergo mandatory health checks every year has been labelled ageist by advocates. </p> <p>General Practitioners have reignited the debate to introduce annual assessments for drivers in Victoria aged 75 and over, to bring the state in line with standards in other states including NSW, Queensland, WA and the Australian Capital Territory. </p> <p>“This is not about discriminating against older people, but a recognition that the skills that are required to drive safely can be lost as we get older,” the Royal Australian College of General Practitioners Victoria chair Dr Anita Muñoz told <em>The Age</em>. </p> <p>"We do feel that having an annual assessment done for elderly drivers is a good thing," the college's Victoria co-deputy chair Dr Bindiya Sethi added. </p> <p>Victoria Police data obtained by <em>The Age</em> also showed that 145 people have died and 7080 have been injured in road incidents caused by people aged over 65. </p> <p>20 per cent of licence holders in Victoria are over 65, which has gone up from 16 per cent a decade ago. </p> <p>In the last financial year, there were 247 deaths and 16,265 injuries caused by crashes on Victorian roads, with drivers aged 65 and over responsible for around 10 per cent of these incidences. </p> <p>However, Chris Potaris, chief executive of the Council on the Ageing Victoria and Seniors Rights Victoria, has called the move "ageist". </p> <p>“We continue to support Victoria’s approach, which emphasises a driver’s behaviour and medical fitness to operate a motor vehicle,” he told the publication. </p> <p>“Driving should be based on ability, not on age.”</p> <p>Seniors Rights Victoria policy and advocacy manager Ben Rogers has also slammed the move. </p> <p>"We find it ageist and arbitrary ... It's targeting people that don't need to be targeted," Rogers said. </p> <p>MP Steve Dimopolous added that there was no evidence that an aged-based assessment model was any better than the existing rules. </p> <p>VicRoads also claimed that there is a lot of misinformation about older drivers, who are "usually more cautious, more experienced and more responsible" than younger drivers.</p> <p> </p> <p>"They are more likely to obey the law and are less likely to drink drive or speed," VicRoads said.</p> <p>However, a few others believe that mandatory assessments are a good move. </p> <p>"I think it's fair enough. Over a certain age, maybe 70 or so," local man Pat said.</p> <p>"I think the younger drivers are worse than the older drivers," another added. </p> <p><em>Image: Getty</em></p>

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Eye infections might seem like a minor complaint – but in some cases they can cause blindness and even death

<div class="theconversation-article-body"><em><a href="https://theconversation.com/profiles/adam-taylor-283950">Adam Taylor</a>, <a href="https://theconversation.com/institutions/lancaster-university-1176">Lancaster University</a></em></p> <p>When you think of eye infections, what comes to mind? Puffy, swollen bruised feeling eyelids that get glued together with gunk overnight? That feeling of having grit in your eye that can’t be cleaned away? Eye infections may seem like a relatively minor – if unsightly and inconvenient – complaint, but they can also be far more serious.</p> <p>Take the deadly outbreak of <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5022785/">antibiotic resistant</a> bacteria <a href="https://www.cff.org/managing-cf/burkholderia-cepacia-complex-b-cepacia"><em>Burkholderia cepacia</em></a> in 2023-24, for example.</p> <p>Between January 2023 and February 2024, contaminated brands of lubricating eye gel were linked to the infection of at least 52 patients. <a href="https://www.independent.co.uk/news/health/contaminated-eye-gel-outbreak-death-b2523446.html">One person died</a> and at least 25 others suffered serious infections.</p> <p>The outbreak has now subsided and products are <a href="https://www.gov.uk/drug-device-alerts/specific-brands-of-carbomer-eye-gel-recall-of-aacarb-eye-gel-aacomer-eye-gel-and-puroptics-eye-gel-potential-risk-of-infection-dsi-slash-2023-slash-11#update-2-april-2024">back on the shelves</a> but it isn’t the first time that <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8335909/">medicinal products</a> have led to outbreaks of <em>B cepacia</em>.</p> <p>The bacterium is an opportunistic pathogen known to pose a significant risk to people with cystic fibrosis, chronic lung conditions and weakened immune systems. The infection likely progresses from the mucous membranes of the eyelids to the lungs where it leads to pneumonia and septicaemia causing <a href="https://erj.ersjournals.com/content/17/2/295">death in days</a>.</p> <p>But it’s not just <em>B cepacia</em> that can threaten our health. Something as simple as rubbing our eyes can introduce pathogens leading to infection, blindness and, in the worst case, death.</p> <p>Bacteria account for up to <a href="https://pubmed.ncbi.nlm.nih.gov/16148850/">70% of eye infections</a> and globally <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9032492/">over 6 million people</a> have blindness or moderate visual impairment from ocular infection. Contact lens wearers are at <a href="https://www.aao.org/eye-health/diseases/contact-lens-related-eye-infections">increased risk</a>.</p> <figure><iframe src="https://www.youtube.com/embed/pWsx8i1kaxs?wmode=transparent&amp;start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe></figure> <p>The eye is a unique structure. It converts light energy to chemical and then electrical energy, which is transmitted to the brain and converted to a picture. The eye uses about <a href="https://www.ncbi.nlm.nih.gov/books/NBK11556/">6 million cones and 120 million rods</a> which detect colour and light.</p> <p>Eye cells have <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8775779/">no ability to regenerate</a> so, once damaged or injured, cannot be repaired or replaced. The body tries its best to preserve the eyes by encasing them in a <a href="https://www.ncbi.nlm.nih.gov/books/NBK531490/">bony protective frame</a> and <a href="https://www.ncbi.nlm.nih.gov/books/NBK482428/">limiting exposure</a> having eyelids to defend against the environmental damage and ensure the eyes are kept lubricated.</p> <p>Despite our bodies’ best efforts to shield the eyes from harm, there are a number of common eye infections that can result from introducing potential pathogens into the eyes.</p> <h2>Conjunctivitis</h2> <p>The outer-most layer of the eye, the sclera, bears the brunt of exposure and to help protect it, it is lined by a thin moist membrane called the <a href="https://my.clevelandclinic.org/health/body/24329-conjunctiva">conjunctiva</a>.</p> <figure><iframe src="https://www.youtube.com/embed/RZ4danuJwd0?wmode=transparent&amp;start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe></figure> <p>The conjunctiva is <a href="https://innovations.bmj.com/content/9/4/253">highly vascularised</a>, which means it has lots of blood vessels. When microbes enter the eye, it is this layer that mounts an immune response causing <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8328962/">blood vessels to dilate</a> in the conjunctiva. This results in <a href="https://www.cdc.gov/conjunctivitis/about/symptoms.html">“pink eye”</a>, a common form of conjunctivitis. Conjunctivitis can be caused by bacteria, allergens or viruses and typically heals by itself.</p> <h2>Blepharitis</h2> <p>Blepharitis is an inflammation of the eyelid and usually affects both sides. It can cause itchy eyes and dandruff-like flakes. It’s most commonly caused by <a href="https://www.tandfonline.com/doi/pdf/10.3109/09273948.2013.870214"><em>Staphylococcus</em> bacteria</a>, or the <a href="https://cks.nice.org.uk/topics/blepharitis/background-information/causes/">dysfunction of the glands</a> of the eyelids. It can be treated by <a href="https://www.nhs.uk/conditions/blepharitis/">cleaning the eyes</a> regularly.</p> <h2>Stye</h2> <p>A stye (also called <a href="https://www.college-optometrists.org/clinical-guidance/clinical-management-guidelines/hordeolum">hordeolum</a>) is a painful infection of the upper or lower eyelid. <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5370090/">Internal styes</a> are caused by infection of an oil-producing gland inside the eyelid, whereas <a href="https://pubmed.ncbi.nlm.nih.gov/28723014/">external styes</a> develop at the base of the eyelash because of an infection of the hair follicle. Both are caused by bacteria, typically <a href="https://jamanetwork.com/journals/jamaophthalmology/fullarticle/1874715">the <em>S aureus</em> form of the <em>Staphylococcus</em> species</a>.</p> <figure><iframe src="https://www.youtube.com/embed/INKrGOdy824?wmode=transparent&amp;start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe></figure> <p>Styes can be treated by holding a clean flannel soaked in warm water against the affected eye for five to ten minutes, three or four times a day. Do not try to burst styes – this could spread the infection.</p> <h2>Keratitis</h2> <p>Keratitis is the inflammation of the cornea, the transparent part of the eye that light passes through. The cornea is part of the eye’s main barrier against dirt, germs, and disease. Severe keratitis can cause ulcers, damage to the eye and even blindness.</p> <p>The most common type is bacterial keratitis; however, it can also be caused by <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7998329/">amoeba</a>, which can migrate to other parts of the body – including the brain – and cause infection and <a href="https://theconversation.com/nasal-rinsing-why-flushing-the-nasal-passages-with-tap-water-to-tackle-hay-fever-could-be-fatal-225811">even death</a>.</p> <p>Noninfectious keratitis is most commonly caused by wearing contact lenses for too long, especially while sleeping. This can cause scratches, dryness and soreness of the cornea, which leads to inflammation.</p> <h2>Uveitis</h2> <p><a href="https://www.nhs.uk/conditions/uveitis/">Uveitis</a> is inflammation of the middle layer of the eye. Although relatively rare, it is a serious condition and usually results from viral infections such as <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8501150/">herpes simplex</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/29023181/">herpes zoster</a> or <a href="https://link.springer.com/chapter/10.1007/978-3-319-09126-6_40">trauma</a>. Depending on where the inflammation is in the eye, the symptoms can be anything from redness, pain and floaters to blurred vision and <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1772296/">partial blindness</a>.</p> <h2>Exogenous endophthalmitis</h2> <p>This is a rare but serious infection caused by eye surgery complications, penetrating ocular trauma (being stabbed in the eye with a sharp object) or foreign bodies in the eye. Foreign bodies can be anything from dirt and dust to small projectiles such as shards of metal from drilling, explosives or soil from farm machinery and <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7286045/">many other sources</a>.</p> <h2>Dacryocystitis</h2> <p>Dacryocystitis is the inflammation of the nasolacrimal sac, which drains tears away from the eye into the nose. This condition can be <a href="https://pubmed.ncbi.nlm.nih.gov/8443113/">acute</a>, <a href="https://www.nature.com/articles/6700662">chronic</a> or <a href="https://www.jebmh.com/articles/a-study-of-congenital-dacryocystitis.pdf.pdf">acquired at birth</a>. Most cases are caused by <a href="https://bmcophthalmol.biomedcentral.com/articles/10.1186/s12886-020-01792-4"><em>Streptococcus pneumoniae</em> and <em>Staphylococcus aureus</em></a> bacteria.</p> <p>The condition mainly affects newborns and those over 40. Seventy-five per cent of cases are women and it’s most commonly found in <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6039673/">white adults</a>. It can lead to the stagnation of tears, creating a breeding ground for microbes.</p> <h2>Careful with contacts</h2> <p>Proper eye hygiene reduces the risk of all these conditions – and this is even more important for contact lens wearers.</p> <figure><iframe src="https://www.youtube.com/embed/uENHAntJOIA?wmode=transparent&amp;start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe></figure> <p>Appropriate hygienic cleaning of lenses is paramount. <a href="https://pubmed.ncbi.nlm.nih.gov/30789440/">Non-sterile water</a>, <a href="https://www.aao.org/eye-health/glasses-contacts/contact-lens-care">spit</a> and other fluids can transfer <a href="https://www.science.org/content/article/bacteria-living-your-contact-lens-solution">potentially dangerous</a> <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3482476/">microbes</a> into the eye – a warm, moist environment that makes an ideal breeding ground for bacteria – leading to <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9542356/">localised infection</a>, <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3972779/">blindness</a> or progress to a more serious <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9835757/">systemic infection or death</a>.</p> <p>Any persistent and painful redness or swelling of eyes should be checked by a registered health professional.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/227252/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/adam-taylor-283950">Adam Taylor</a>, Professor and Director of the Clinical Anatomy Learning Centre, <a href="https://theconversation.com/institutions/lancaster-university-1176">Lancaster University</a></em></p> <p><em>Image credits: Getty Images </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/eye-infections-might-seem-like-a-minor-complaint-but-in-some-cases-they-can-cause-blindness-and-even-death-227252">original article</a>.</em></p> </div>

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Centenarian blood tests give hints of the secrets to longevity

<p><em><a href="https://theconversation.com/profiles/karin-modig-1473484">Karin Modig</a>, <a href="https://theconversation.com/institutions/karolinska-institutet-1250">Karolinska Institutet</a></em></p> <p>Centenarians, once considered rare, have become commonplace. Indeed, they are the <a href="https://www.weforum.org/agenda/2021/02/living-to-one-hundred-life-expectancy/">fastest-growing demographic group</a> of the world’s population, with numbers roughly doubling every ten years since the 1970s.</p> <p>How long humans can live, and what determines a long and healthy life, have been of interest for as long as we know. Plato and Aristotle discussed and <a href="https://pubmed.ncbi.nlm.nih.gov/12092789/">wrote about the ageing process</a> over 2,300 years ago.</p> <p>The pursuit of understanding the secrets behind exceptional longevity isn’t easy, however. It involves <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7105197/">unravelling the complex interplay</a> of genetic predisposition and lifestyle factors and how they interact throughout a person’s life. Now our recent study, <a href="https://link.springer.com/article/10.1007/s11357-023-00936-w">published in GeroScience</a>, has unveiled some common biomarkers, including levels of cholesterol and glucose, in people who live past 90.</p> <p>Nonagenarians and centenarians have long been of intense interest to scientists as they may help us understand how to live longer, and perhaps also how to age in better health. So far, studies of centenarians have often been small scale and focused on a selected group, for example, excluding centenarians who live in care homes.</p> <h2>Huge dataset</h2> <p>Ours is the largest study comparing biomarker profiles measured throughout life among exceptionally long-lived people and their shorter-lived peers to date.</p> <p>We compared the biomarker profiles of people who went on to live past the age of 100, and their shorter-lived peers, and investigated the link between the profiles and the chance of becoming a centenarian.</p> <p>Our research included data from 44,000 Swedes who underwent health assessments at ages 64-99 - they were a sample of <a href="https://pubmed.ncbi.nlm.nih.gov/28158674/">the so-called Amoris cohort</a>. These participants were then followed through Swedish register data for up to 35 years. Of these people, 1,224, or 2.7%, lived to be 100 years old. The vast majority (85%) of the centenarians were female.</p> <p>Twelve blood-based biomarkers related to inflammation, metabolism, liver and kidney function, as well as potential malnutrition and anaemia, were included. All of these <a href="https://www.nature.com/articles/s41591-019-0719-5">have been associated</a> with ageing or mortality in previous studies.</p> <p>The biomarker related to inflammation was uric acid – a waste product in the body caused by the digestion of certain foods. We also looked at markers linked to metabolic status and function including total cholesterol and glucose, and ones related to liver function, such as alanine aminotransferase (Alat), aspartate aminotransferase (Asat), albumin, gamma-glutamyl transferase (GGT), alkaline phosphatase (Alp) and lactate dehydrogenase (LD).</p> <p>We also looked at creatinine, which is linked to kidney function, and iron and total iron-binding capacity (TIBC), which is linked to anaemia. Finally, we also investigated albumin, a biomarker associated with nutrition.</p> <h2>Findings</h2> <p>We found that, on the whole, those who made it to their hundredth birthday tended to have lower levels of glucose, creatinine and uric acid from their sixties onwards. Although the median values didn’t differ significantly between centenarians and non-centenarians for most biomarkers, centenarians seldom displayed extremely high or low values.</p> <p>For example, very few of the centenarians had a glucose level above 6.5 earlier in life, or a creatinine level above 125.</p> <p>For many of the biomarkers, both centenarians and non-centenarians had values outside of the range considered normal in clinical guidelines. This is probably because these guidelines are set based on a younger and healthier population.</p> <p>When exploring which biomarkers were linked to the likelihood of reaching 100, we found that all but two (alat and albumin) of the 12 biomarkers showed a connection to the likelihood of turning 100. This was even after accounting for age, sex and disease burden.</p> <p>The people in the lowest out of five groups for levels of total cholesterol and iron had a lower chance of reaching 100 years as compared to those with higher levels. Meanwhile, people with higher levels of glucose, creatinine, uric acid and markers for liver function also decreased the chance of becoming a centenarian.</p> <p>In absolute terms, the differences were rather small for some of the biomarkers, while for others the differences were somewhat more substantial.</p> <p>For uric acid, for instance, the absolute difference was 2.5 percentage points. This means that people in the group with the lowest uric acid had a 4% chance of turning 100 while in the group with the highest uric acid levels only 1.5% made it to age 100.</p> <p>Even if the differences we discovered were overall rather small, they suggest a potential link between metabolic health, nutrition and exceptional longevity.</p> <p>The study, however, does not allow any conclusions about which lifestyle factors or genes are responsible for the biomarker values. However, it is reasonable to think that factors such as nutrition and alcohol intake play a role. Keeping track of your kidney and liver values, as well as glucose and uric acid as you get older, is probably not a bad idea.</p> <p>That said, chance probably plays a role at some point in reaching an exceptional age. But the fact that differences in biomarkers could be observed a long time before death suggests that genes and lifestyle may also play a role.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/215166/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/karin-modig-1473484">Karin Modig</a>, Associate Professor, Epidemiology, <a href="https://theconversation.com/institutions/karolinska-institutet-1250">Karolinska Institutet</a></em></p> <p><em>Image credits: Shutterstock</em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/centenarian-blood-tests-give-hints-of-the-secrets-to-longevity-215166">original article</a>.</em></p>

Retirement Life

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Could my glasses be making my eyesight worse?

<p><em><a href="https://theconversation.com/profiles/james-armitage-399647">James Armitage</a>, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a> and <a href="https://theconversation.com/profiles/nick-hockley-1517162">Nick Hockley</a>, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a></em></p> <p>So, you got your eyesight tested and found out you need your first pair of glasses. Or you found out you need a stronger pair than the ones you have. You put them on and everything looks crystal clear. But after a few weeks things look blurrier without them than they did before your eye test. What’s going on?</p> <p>Some people start to wear spectacles for the first time and perceive their vision is “bad” when they take their glasses off. They incorrectly interpret this as the glasses making their vision worse. Fear of this might make them <a href="https://www.bbc.com/future/article/20140513-do-glasses-weaken-your-eyesight#:%7E:text=A%20study%20from,they%20are%20right%3F">less likely to wear their glasses</a>.</p> <p>But what they are noticing is how much better the world appears through the glasses. They become <a href="https://www.tandfonline.com/doi/full/10.1080/2576117X.2022.2033588">less tolerant</a> of a blurry world when they remove them.</p> <p>Here are some other things you might notice about eyesight and wearing glasses.</p> <h2>Lazy eyes?</h2> <p>Some people sense an increasing reliance on glasses and wonder if their eyes have become “lazy”.</p> <p>Our eyes work in much the same way as an auto-focus camera. A flexible lens inside each eye is controlled by muscles that let us <a href="https://www.aao.org/museum-eye-openers/how-does-eye-focus">focus on objects</a> in the distance (such as a footy scoreboard) by relaxing the muscle to flatten the lens. When the muscle contracts it makes the lens steeper and more powerful to see things that are much closer to us (such as a text message).</p> <p>From the age of about 40, the lens in our eye <a href="https://theconversation.com/why-we-lose-our-hearing-and-vision-as-we-age-67930">progressively hardens</a> and loses its ability to change shape. Gradually, we lose our capacity to focus on near objects. This is called “<a href="https://www.nei.nih.gov/learn-about-eye-health/eye-conditions-and-diseases/presbyopia">presbyopia</a>” and at the moment there are no treatments for this lens hardening.</p> <p>Optometrists correct this with prescription glasses that take the load of your natural lens. The lenses allow you to see those up-close images clearly by providing extra refractive power.</p> <p>Once we are used to seeing clearly, our tolerance for blurry vision will be lower and we will reach for the glasses to see well again.</p> <h2>The wrong glasses?</h2> <p>Wearing old glasses, the wrong prescription (or even someone else’s glasses) won’t allow you to see as well as possible for day-to-day tasks. It could also cause <a href="https://headaches.org/readers-mail-glasses-causing-headache/">eyestrain and headaches</a>.</p> <p>Incorrectly prescribed or dispensed prescription glasses can lead to vision impairment in children <a href="https://iovs.arvojournals.org/article.aspx?articleid=2126392">as their visual system is still in development</a>.</p> <p>But it is more common for kids to develop long-term vision problems as a result of <a href="https://www.cera.org.au/wp-content/uploads/2021/08/Healthy-Young-Eyes-Guide-ACC.pdf">not wearing glasses when they need them</a>.</p> <p>By the time children are about 10–12 years of age, wearing incorrect spectacles is less likely to cause their eyes to become lazy or damage vision in the long term, but it is likely to result in <a href="https://www.cera.org.au/wp-content/uploads/2021/08/Healthy-Young-Eyes-Guide-ACC.pdf">blurry or uncomfortable vision</a> during daily wear.</p> <p><a href="https://goodvisionforlife.com.au/">Registered optometrists in Australia</a> are trained to assess refractive error (whether the eye focuses light into the retina) as well as the different aspects of ocular function (including how the eyes work together, change focus, move around to see objects). All of these help us see clearly and comfortably.</p> <h2>What about dirty glasses?</h2> <p>Dirty or scratched glasses can give you the impression your vision is worse than it actually is. Just like a window, the dirtier your glasses are, the more difficult it is to see clearly through them. <a href="https://www.optometry.org.au/wp-content/uploads/GVFL/Brochure_PDFs/Care-for-Glasses-2018-A4-single-page-final.pdf">Cleaning glasses regularly</a> with a microfibre lens cloth will help.</p> <p>While dirty glasses are not commonly associated with eye infections, some research suggests dirty glasses can <a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0207238">harbour bacteria</a> with the remote but theoretical <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6628431/#:%7E:text=59%2C60%5D.-,S.,39%2C40%2C41%5D.">potential to cause eye infection</a>.</p> <p>To ensure best possible vision, people who wear prescription glasses every day should clean their lenses at least every morning and twice a day where required. Cleaning frames with alcohol wipes can <a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0207238">reduce bacterial contamination by 96%</a> – but care should be taken as alcohol can damage some frames, depending on what they are made of.</p> <h2>When should I get my eyes checked?</h2> <p><a href="https://goodvisionforlife.com.au/faqs/">Regular eye exams</a>, starting just before school age, are important for ocular health. Most prescriptions for corrective glasses <a href="https://www.ahpra.gov.au/documents/default.aspx?record=WD16%2F20156&amp;dbid=AP&amp;chksum=676U2aH1QM4XJ6ICVAVaKg%3D%3D">expire within two years</a> and contact lens prescriptions often expire after a year. So you’ll need an eye check for a new pair every year or so.</p> <p>Kids with ocular conditions such as progressive myopia (short-sightedness), strabismus (poor eye alignment), or amblyopia (reduced vision in one eye) will need checks at least every year, but likely more often. Likewise, people over 65 or who have known eye conditions, such as <a href="https://goodvisionforlife.com.au/vision-problems/glaucoma/">glaucoma</a>, will be recommended more frequent checks.</p> <p>An <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6706420/">online prescription estimator</a> is no substitute for a full eye examination. If you have a valid prescription then you can order glasses online, but you miss out on the ability to check the fit of the frame or to have them adjusted properly. This is particularly important for multifocal lenses where even a millimetre or two of misalignment can cause uncomfortable or blurry vision.</p> <p>Conditions such as <a href="https://www.cdc.gov/diabetes/managing/diabetes-vision-loss.html#:%7E:text=Diabetic%20retinopathy%20is%20caused%20when,vision%20or%20stopping%20blood%20flow.">diabetes</a> or <a href="https://www.ncbi.nlm.nih.gov/books/NBK525980/">high blood pressure</a>, can affect the eyes so regular eye checks can also help flag broader health issues. The vast majority of eye conditions can be treated if caught early, highlighting the importance of regular preventative care.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/225169/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/james-armitage-399647">James Armitage</a>, Associate Professor in Vision Science, Optometry Course Director, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a> and <a href="https://theconversation.com/profiles/nick-hockley-1517162">Nick Hockley</a>, Lecturer in Optometric Clinical Skills, Director Deakin Collaborative Eye Care Clinic, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a></em></p> <p><em>Image credits: Getty Images </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/could-my-glasses-be-making-my-eyesight-worse-225169">original article</a>.</em></p>

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Mission: Impossible Sydney mansion sells for eye-watering price

<p>One of Sydney's most iconic properties, known as the Boomerang in Elizabeth Bay, has sold for $80 million. </p> <p>The mansion is featured in the second instalment in the <em>Mission: Impossible</em> franchise, with the 2000 movie starring Tom Cruise being set and filmed in Sydney.</p> <p>It was the first house to officially sell for above $1 million in 1978, before setting another record in 2002 when it fetched $20.7 million.</p> <p>Now, multiple sources have confirmed it has been snapped up by a purchaser, originally from Asia, for four times what it last sold for. </p> <p>The property has long been rated as one of Sydney’s Top 50 homes, and has been in the name of Katrina Fox, the daughter of Melbourne-based billionaire trucking magnate Lindsay Fox, since 2005. </p> <p>The impressive home was put up for sale by Ray White in 2017 with hopes of selling for $60 million and then again with Brad Pillinger of Pillinger for $80 million in 2021 — the last agent to have it listed.</p> <p>Pillinger couldn’t be contacted ahead of publication, but other sources have confirmed the property has sold for the $80m asking price, while speculation from other sources that the result was $105 million have been dismissed.</p> <p>Boomerang sits on 4233 square metres of waterfront land, and features 25 rooms including a private cinema modelled on the State Theatre.</p> <p><em>Image credits: realestate.com.au / Paramount Pictures</em></p>

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Top tips for happy and healthy eyes this Autumn

<p dir="ltr">As the season changes, so do our healthcare needs as many people struggle with irritating allergies. </p> <p dir="ltr">With cooler temperatures, dry air and an increase in pollen often being synonymous with autumn and spring, for many people, leaving the house means having irritated eyes. </p> <p dir="ltr">Luckily, leading Ophthalmologist, Dr. Jacqueline Beltz has shared her essential tips for eye care during autumn with OverSixty, giving you the opportunity to enjoy the change of seasons without jeopardising your vision. </p> <p dir="ltr"><strong>1. Keep your sunglasses handy</strong></p> <p dir="ltr">While the sun is usually not as intense in autumn as it is during summer, Dr Beltz says that using sunglasses can benefit your eyes in many ways. </p> <p dir="ltr">“ Not only do they shield your eyes from harmful UV rays, but they also guard against wind and debris,” she said. </p> <p dir="ltr"><strong>2. Increase your lubricant eye drops</strong></p> <p dir="ltr">Dr Beltz said, “The drop in temperature and the dryer air can contribute to discomfort and dryness in your eyes, so consider increasing the use of lubricant eye drops to keep your eyes moist and comfortable.”</p> <p dir="ltr">By keeping up your eye drops in autumn, you can prevent further damage to your eyes in the long run. </p> <p dir="ltr"><strong>3. Clean your eyelashes daily</strong></p> <p dir="ltr">According to Dr Beltz, keeping up with good health and hygiene along the eyelid margins is essential, especially during the autumn months. </p> <p dir="ltr">“Cleanse your lashes daily and use a warm compress to optimise the quality of your tear film. This helps in preventing irritation and supports overall eye health.”</p> <p dir="ltr"><strong>4. Consider a humidifier</strong></p> <p dir="ltr">To ensure a more comfortable environment for your eyes, Dr Beltz recommends adding moisture to the air can help alleviate dry eyes.</p> <p dir="ltr">She said, “Combat the dry indoor air by using a humidifier in your room, especially while you sleep.”</p> <p dir="ltr"><strong>5. Be proactive with allergies</strong></p> <p dir="ltr">If you are prone to allergies, Dr Beltz said it's best to always be prepared ahead of time. </p> <p dir="ltr">“Autumn allergies are a reality, with triggers like pollen, mould, and dust prevalent during this season,” she said. </p> <p dir="ltr">“If you experience red, itchy, or swollen eyes, consider antihistamine eye drops. Keep your hands clean and avoid rubbing your eyes.”</p> <p dir="ltr"><strong>6. Revitalise your eye makeup</strong></p> <p dir="ltr">While replacing your eye makeup is important all year around, the addition of allergens makes it even more important to Change mascara and non-cleanable products like liquid eyeliner at least every three months. </p> <p dir="ltr">“Especially if you have sensitive eyes, makeup products can harbour bacteria, leading to increased eye irritation.”</p> <p dir="ltr">“Refreshing your eye makeup products to options that are designed to be better suited for dry eyes or eye sensitivity.”</p> <p dir="ltr">If you are <a href="https://oversixty.com.au/lifestyle/beauty-style/embracing-the-art-of-beauty-without-compromise">prone to sensitive eyes</a>, consider trying the OKKIYO <a href="https://www.okkiyo.com/products/protect-and-preserve-mascara#xd_co_f=NzdiNzdlNTctNTA1MS00NTBkLWE1MGEtNjRkMGE2OTI1N2Vj~">Prioriteyes Mascara</a>, which was developed by Dr Beltz to prioritise both style and eye health.</p> <p dir="ltr">While these tips for eye health can seem simple and seemingly unimportant, Dr Beltz assures that by following these tips, you will make a world of difference for your eye health overall. </p> <p dir="ltr">She said, “Implementing these simple tips can make a significant difference in keeping your eyes comfortable and vibrant throughout the season.”</p> <p dir="ltr"><em>Image credits: Getty Images </em></p>

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Should we still be using RATs to test for COVID? 4 key questions answered

<p><em><a href="https://theconversation.com/profiles/hassan-vally-202904">Hassan Vally</a>, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a></em></p> <p>We’re currently navigating <a href="https://www.thenewdaily.com.au/life/health/2023/11/15/covid-australia-eighth-wave">an eighth wave</a> of <a href="https://theconversation.com/were-in-a-new-covid-wave-what-can-we-expect-this-time-216820">COVID infections</a> in Australia. However the threat COVID poses to us is significantly less than it has ever been, thanks to immunity we’ve acquired through <a href="https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(22)00801-5/fulltext">a combination</a> of prior infection and vaccination.</p> <p>That said, COVID is by no means behind us. The threat of severe illness remains higher for many people, and we’re all potentially at risk of developing <a href="https://www.health.gov.au/topics/covid-19/long-covid">long COVID</a>.</p> <p>While many people appear to be doing fewer rapid antigen tests (RATs) than they used to – if any at all – with rising cases, and as we head towards the festive season, testing continues to be important.</p> <p>So what do you need to know about testing in this wave? Here are four key questions answered.</p> <h2>1. When should I do a RAT?</h2> <p>There are a few situations where determining your COVID status is important to inform your actions, particularly during an uptick in infections. With more circulating virus, your index of suspicion that you have COVID if you’re experiencing cold-like symptoms should be higher.</p> <p>RATs work best when they’re used to confirm whether you have COVID when you <a href="https://www.tga.gov.au/products/covid-19/covid-19-tests/how-testing-works-covid-19">have respiratory symptoms</a> and are infectious. So the primary use of RATs should be to determine your COVID status when you’re sick. A positive test should prompt you to isolate, and if you’re eligible, to seek antivirals.</p> <p>Testing might also be worthwhile if you’ve come into contact with someone with COVID but you haven’t developed symptoms. If you find you have in fact contracted the virus, you can take steps to avoid spreading it to other people (you can infect others even <a href="https://www.healthline.com/health/what-is-asymptomatic-covid#prevalence">when you’re asymptomatic</a>). This is especially important if you’re going to be socialising in large groups or in contact with people who are vulnerable.</p> <p>Another situation in which to consider testing, particularly at this time of year, is before attending large social gatherings. While the reliability of a RAT is never perfect, do the test as close to the event as possible, because your disease status <a href="https://www.businessinsider.com/omicron-rapid-test-hour-before-party-not-day-before-expert-2021-12">can change quickly</a>.</p> <h2>2. Should I test multiple times?</h2> <p>Yes. RATs are not as sensitive as PCR tests, which is the trade-off we make for being able to do this test at home and <a href="https://www.wsj.com/articles/public-health-officials-pursue-covid-19-tests-that-trade-precision-for-speed-11599562800">getting a rapid result</a>.</p> <p>This means that while if you test positive with a RAT you can be very confident you have COVID, if you test negative, you cannot be as confident that you don’t have COVID. That is, the test may give you a false negative result.</p> <p>Although RATs from different manufacturers have different accuracies, all RATs approved by Australia’s Therapeutic Goods Administration must have a sensitivity of <a href="https://www.tga.gov.au/products/covid-19/covid-19-tests/covid-19-rapid-antigen-self-tests-home-use/covid-19-rapid-antigen-self-tests-are-approved-australia#:%7E:text=For%20rapid%20antigen%20tests%2C%20this,specificity%20of%20at%20least%2098%25.">at least 80%</a>.</p> <p>The way to increase your confidence in a negative result is to do multiple RATs serially – each negative test increases the confidence you can have that you don’t have COVID. If you have symptoms and have tested negative after your first RAT, <a href="https://www.fda.gov/medical-devices/safety-communications/home-covid-19-antigen-tests-take-steps-reduce-your-risk-false-negative-results-fda-safety">the advice</a> is to repeat the test after 48 hours, and potentially a third time after another 48 hours if the second test is also negative.</p> <h2>3. Do RATs detect the latest variants?</h2> <p>Since RATs <a href="https://www.healthdirect.gov.au/covid-19/testing#:%7E:text=Rapid%20antigen%20tests%2C%20or%20RATs,of%20proteins%20of%20the%20virus.">detect particular surface proteins</a> on SARS-CoV-2 (the virus that causes COVID), it’s theoretically possible that as the virus evolves, the reliability of these tests may be affected.</p> <p>However, RATs were designed to detect a part of the virus that is not as likely to mutate, so the hope is these tests <a href="https://www.health.com/do-covid-tests-work-new-variants-7967102">will continue to hold up</a> as SARS-CoV-2 evolves.</p> <p>The performance of RATs is continually being assessed by manufacturers. So far, there’s been no change reported in the ability of these tests to <a href="https://www.ama.com.au/articles/tga-updated-advice-rats-nearing-expiry-and-rats-efficacy-current-strains#:%7E:text=The%20TGA%20has%20received%20evidence,19%20RAT%20post%2Dmarket%20review.">detect the latest variants</a>.</p> <h2>4. Can I rely on expired RATs?</h2> <p>At this point in the pandemic, you might have a few expired tests at the back of your cupboard.</p> <p>Technically the most appropriate advice is to say you should never use a diagnostic test <a href="https://www.tga.gov.au/products/covid-19/covid-19-tests/covid-19-rapid-antigen-self-tests-home-use/covid-19-rapid-antigen-self-tests-are-approved-australia">past its expiry date</a>. As a general principle the performance of a test cannot be guaranteed beyond this date. The risk is that over time the components of the RAT degrade and if you use a test that’s not working optimally, it’s more likely to indicate <a href="https://www.health.com/can-you-use-expired-covid-test-6827970">you don’t have COVID</a> when you actually do, which may have consequences.</p> <p>However, as for all things COVID, the answer is not so black and white. Since these tests were new when they were introduced earlier in the pandemic, manufacturers didn’t have specific data on their performance over time, and so the expiry dates given were necessarily conservative.</p> <p>It’s likely these tests will work beyond the expiry dates on the packet, but just how long and how well they work is a bit of an unknown, so we need to be cautious.</p> <p>The other thing to consider is ensuring you store RATs correctly. Storage instructions should be found on the packet, but the key issue is making sure they’re not exposed to extreme temperatures. In particular, <a href="https://7news.com.au/lifestyle/health-wellbeing/how-to-properly-store-your-at-home-covid-19-rapid-antigen-tests-c-5465412">high temperatures</a> may damage the chemicals in the test which may reduce its sensitivity.</p> <h2>The path from here</h2> <p>Regular upticks in COVID cases are something we’re going to have to get used to. At these times, we should all be a bit more cautious about looking after ourselves and others as we go about our lives. What this looks like will vary for different people depending on their personal circumstances.</p> <p>However, being up to date with <a href="https://theconversation.com/what-are-the-new-covid-booster-vaccines-can-i-get-one-do-they-work-are-they-safe-217804">booster vaccinations</a>, having a plan for <a href="https://www.health.gov.au/topics/covid-19/oral-treatments">accessing antivirals</a> if you’re eligible, <a href="https://theconversation.com/with-covid-surging-should-i-wear-a-mask-217902">wearing masks</a> in high-risk settings and testing all continue to play an important role in responding to COVID.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/218016/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><a href="https://theconversation.com/profiles/hassan-vally-202904"><em>Hassan Vally</em></a><em>, Associate Professor, Epidemiology, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a></em></p> <p><em>Image credits: Getty Images</em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/should-we-still-be-using-rats-to-test-for-covid-4-key-questions-answered-218016">original article</a>.</em></p>

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Worried about getting a blood test? 5 tips to make them easier (and still accurate)

<p><em><a href="https://theconversation.com/profiles/sapha-shibeeb-1481231">Sapha Shibeeb</a>, <a href="https://theconversation.com/institutions/rmit-university-1063">RMIT University</a></em></p> <p>Blood tests are a common medical procedure, offering valuable insights into a person’s health. Whether you’re getting a routine check-up, diagnosing a medical condition or monitoring treatment progress, understanding the process can make the experience more comfortable and effective.</p> <p>For the majority of patients, blood collections are a minor inconvenience. Others may feel <a href="https://www.sciencedirect.com/science/article/abs/pii/S0887618506000041">uneasy and anxious</a>.</p> <p>Preparation strategies can help get you through the procedure.</p> <h2>How blood is collected</h2> <p>During venipuncture (blood draw), the phlebotomist (blood collector) inserts a needle through the skin into a vein and a small amount of blood is collected and transferred into a test tube.</p> <p>Tubes are sent to a laboratory, where the blood is analysed. A laboratory technician may count or examine cells and measure the levels of minerals/salts, enzymes, proteins or other substances in the sample. For some tests, blood plasma is separated out by spinning (centrifuging) the sample. Others pass a light beam through the sample to determine the amount of a chemical present.</p> <p>For collection, the phlebotomist usually selects a vein in the crook of your elbow, where veins are readily accessible. Blood can also be drawn from veins in the wrists, fingers or heels. A tourniquet may be applied to restrict blood flow and make the chosen vein puff out.</p> <h2>Different tests require different preparation</h2> <p>Before a blood test, the GP or health-care provider will give you specific instructions.</p> <p>These may include fasting for up to 12 hours or temporarily discontinuing certain medications.</p> <p>It is crucial to follow these guidelines meticulously as they can significantly impact the accuracy of your test results. For example, fasting is required before glucose (blood sugar) and lipids (blood fats) testing because blood sugar and cholesterol levels typically increase after a meal.</p> <p>If the blood test requires fasting, you will be asked not to eat or drink (no tea, coffee, juice or alcohol) for about eight to 12 hours. Water is allowed but smoking should be avoided because it can increase <a href="https://diabetesjournals.org/care/article/19/2/112/19825/Acute-Effect-of-Cigarette-Smoking-on-Glucose">blood sugar, cholesterol and triglyceride levels</a>.</p> <p>Generally, you will be asked to fast overnight and have the blood collection done in the morning. Fasting for longer than 15 hours could impact your results, too, by causing dehydration or the release of certain chemicals in the blood.</p> <p>If you have diabetes, you must consult your doctor prior to fasting because it can increase the risk of hypoglycemia (low blood sugar) in people with type 1 diabetes. Most type 2 diabetics can safely fast before a blood test but there are some exceptions, such as people who are taking certain medications including insulin.</p> <h2>5 tips for a better blood test</h2> <p>To improve your blood collection experience, consider these tips:</p> <p><strong>1. Hydrate</strong></p> <p>Drink plenty of water right up to 30 minutes before your appointment. Adequate hydration improves blood flow, making your veins more accessible. Avoid <a href="https://academic.oup.com/labmed/article/34/10/736/2657269">strenuous exercise</a> before your blood test, which can increase some blood parameters (such as liver function) while decreasing others (such as sodium).</p> <p><strong>2. Loose clothing</strong></p> <p>Wear clothing that allows easy access to your arms to ensure a less stressful procedure.</p> <p><strong>3. Manage anxiety</strong></p> <p>If the sight of blood or the procedure makes you anxious, look away while the needle is inserted and try to keep breathing normally. Distraction can help – virtual reality has been <a href="https://pubmed.ncbi.nlm.nih.gov/31889358/">trialled</a> to reduce needle anxiety in children. You could try bringing something to read or music to listen to.</p> <p><strong>4. Know your risk of fainting</strong></p> <p>If you’re prone to fainting, make sure to inform the phlebotomist when you arrive. You can have your blood drawn while lying down to minimise the risk of passing out and injury. Hydration helps maintain blood pressure and can also <a href="https://www.ahajournals.org/doi/10.1161/01.CIR.0000101966.24899.CB">reduce the risk</a> of fainting.</p> <p><strong>5. Discuss difficult veins</strong></p> <p>Some people have smaller or scarred veins, often due to repeated punctures, <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4989034/">chemotherapy</a> or blood thinner use. In such cases, venipuncture may require multiple attempts. It is important to talk to the phlebotomist if you feel discomfort or significant pain. A finger prick can be performed as an alternative for some tests, such as blood glucose levels. But other comprehensive tests require larger blood volume.</p> <h2>Blood draws after lymph node removal</h2> <p>Historically, there were concerns about drawing blood from an arm that had undergone lymph node removal. This was due to the risk of <a href="https://www.cancer.gov/about-cancer/treatment/side-effects/lymphedema/lymphedema-pdq#:%7E:text=Lymphedema%20is%20the%20build%2Dup,the%20way%20that%20it%20should.">lymphedema</a>, a condition marked by fluid build-up in the affected arm. Lymph nodes may have been removed (<a href="https://www.ncbi.nlm.nih.gov/books/NBK564397/#:%7E:text=Lymph%20node%20dissection%2C%20also%20known,surgical%20management%20of%20malignant%20tumors.">lymphadenectomy</a>) for cancer diagnosis or treatment.</p> <p>However, a <a href="https://ascopubs.org/doi/10.1200/JCO.2015.61.5948">2016 study</a> showed people who’ve had lymph nodes removed are not at a higher risk of developing lymphedema following blood draws, even when drawing blood from the affected arm.</p> <h2>After your blood test</h2> <p>The whole blood test procedure usually lasts no more than a few minutes. Afterwards, you may be asked to apply gentle pressure over a clean dressing to aid clotting and reduce swelling.</p> <p>If you do experience swelling, bruising or pain after a test, follow general first aid procedures to alleviate discomfort. These include applying ice to the site, resting the affected arm and, if needed, taking a pain killer.</p> <p>It is usually recommended you do not do heavy lifting for a few hours after a blood draw. This is to prevent surges in blood flow that could prevent clotting where the blood was taken.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/216073/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/sapha-shibeeb-1481231">Sapha Shibeeb</a>, Senior lecturer in Laboratory Medicine , <a href="https://theconversation.com/institutions/rmit-university-1063">RMIT University</a></em></p> <p><em>Image credits: Shutterstock</em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/worried-about-getting-a-blood-test-5-tips-to-make-them-easier-and-still-accurate-216073">original article</a>.</em></p>

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Eye-watering price tag for "remarkable" first class Titanic menu

<p>A first class dinner menu from the Titanic has been found and sold at an auction in England for £84,000 (around $162,000 AUD) on November 11. </p> <p>The water-stained menu was dated April 11, 1912 just three days before the ship hit an iceberg, ultimately meeting it's ill-fated end causing over 1500 deaths. </p> <p>Wealthy passengers at the time were spoiled with choice, with oysters, salmon, beef, squab (baby pigeon), spring lamb among other dishes on the menu, and that's not including dessert. </p> <p>Auctioneers Henry Aldridge &amp; Son said it was unclear how the menu made it off the ship intact, but the slight water damage suggests that it was recovered from the body of a victim. </p> <p>The rare artefact, which is over 111 years old belonged to amateur historian Len Stephenson, from Nova Scotia, Canada, who passed away in 2017. </p> <p>No one knew he had it, including his family, who only discovered it after going through his belongings following his death. </p> <p>“About six months ago his daughter and his son-in-law, Allen, felt the time was right to go through his belongings,” auctioneer Andrew Aldridge said. </p> <p>“As they did they found this menu in an old photo album.</p> <p>“Len was a very well thought-of historian in Nova Scotia which has strong connections with the Titanic. The body recovery ships were from Nova Scotia and so all the victims were taken back there.</p> <p>“Sadly, Len has taken the secret of how he acquired this menu to the grave with him.”</p> <p>Stephenson worked at a post office and would talk to people, collect old pictures and write letters for them, which might be how he got the rare artefact. </p> <p>According to the auctioneer, no other first class dinner menus dated April 11, 1912 have been recovered from the titanic making this “a remarkable survivor from the most famous Ocean liner of all time”.</p> <p>“There are a handful of April 14 menus in existence but you just don’t see menus from April 11. Most of them would have gone down with the ship,” Aldridge said. </p> <p>“Whereas with April 14 menus, passengers would have still had them in their coat and jacket pockets from earlier on that fateful night and still had them when they were taken off the ship," he added. </p> <p>A few other items recovered from the Titanic were also sold, including a Swiss-made pocket watch recovered from passenger Sinai Kantor which fetched £97,000 (around $187,000 AUD). </p> <p>A tartan-patterned deck blanket, which was likely used during the rescue operation also sold for £96,000 (around $185,000). </p> <p><em>Images: Henry Aldridge &amp; Son of Devizes, Wiltshire</em></p> <p> </p>

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What your family history says about your eyesight

<p>Eye disorders can be caused by many things such as infection and injury but did you know it can also be genetic? We know looking up our family history is important for our health but it’s also vitally important to do so for our eyes. Genetics do play a role in determining your family’s susceptibility to certain eye diseases so it’s a good idea to check your family history as well as record any eye issues you have for future generations.</p> <p>Here are some of the most common hereditary eye conditions. </p> <p><strong>Glaucoma</strong></p> <p>Not all glaucoma is inherited but the most common type, primary open-angle glaucoma, is hereditary. According to the Glaucoma Research Foundation, a family history of glaucoma increases your risk around four to nine times.</p> <p>Coupled with the fact glaucoma is much more common as you age, it’s a good idea to get your eyes checked regularly. Glaucoma can lead to the reduction in peripheral vision and even blindness. Signs include bulging eyes, excessive tearing and abnormal sensitivity to light.</p> <p><strong>Age-related macular degeneration</strong></p> <p>Scientist have found that genetics may contribute to the risk of having macular degeneration but it’s not always the case. Some people never develop it even though both parents may have it while others get it even though there is no family history. The current research shows that genetics contribute to macular degeneration anywhere from 40 to 70 percent.</p> <p>However, whether you have a family history or not it’s important to get your eyes checked as age-related macular degeneration is the leading cause of vision loss in people aged 50 and over. </p> <p><strong>Colour blindness</strong></p> <p>A misnomer as people are not ‘blind’ but colour vision deficient. People who are colour blind usually cannot distinguish between certain colours such as red and green. Inherited colour blindness is common in men with women rarely affected. There is no treatment and most people adjust to the condition.</p> <p><strong>Retinitis pigmentosa</strong></p> <p>A mutated gene causes the retina to degenerate which can lead to night blindness and vision loss. Most cases are inherited and it usually appears in childhood but vision loss doesn’t occur until later in life. There is unfortunately no cure and no treatments but researchers are making significant progress in identifying the genes that cause retinitis pigmentosa.</p> <p><strong>Achromatopsia</strong></p> <p>An inherited condition (only if both parents have the recessive gene) that affects 1 in 33,000 people. The condition is associated with decreased vision, sensitivity to light and colour blindness.</p> <p><strong>Optic atrophy</strong></p> <p>Optic atrophy may be inherited or caused by brain trauma, inflammation, degenerative disorders, haemorrhage or tumour. The breakdown of the optic nerve causes vision loss. </p> <p><em>Image credits: Getty Images </em></p>

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Do blue-light glasses really work? Can they reduce eye strain or help me sleep?

<p><em><a href="https://theconversation.com/profiles/laura-downie-1469379">Laura Downie</a>, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a></em></p> <p>Blue-light glasses are said to <a href="https://www.baxterblue.com.au/collections/blue-light-glasses">reduce eye strain</a> when using <a href="https://www.blockbluelight.com.au/collections/computer-glasses">computers</a>, improve your <a href="https://www.ocushield.com/products/anti-blue-light-glasses">sleep</a> and protect your eye health. You can buy them yourself or your optometrist can prescribe them.</p> <p>But <a href="https://mivision.com.au/2019/03/debate-continues-over-blue-blocking-lenses/">do they work</a>? Or could they do you harm?</p> <p>We <a href="https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD013244.pub2/full">reviewed</a> the evidence. Here’s what we found.</p> <h2>What are they?</h2> <p>Blue-light glasses, blue light-filtering lenses or blue-blocking lenses are different terms used to describe lenses that reduce the amount of short-wavelength visible (blue) light reaching the eyes.</p> <p>Most of these lenses prescribed by an optometrist decrease blue light transmission by <a href="https://onlinelibrary.wiley.com/doi/10.1111/opo.12615">10-25%</a>. Standard (clear) lenses do not filter blue light.</p> <p>A wide variety of lens products are available. A filter can be added to prescription or non-prescription lenses. They are widely marketed and are becoming <a href="https://onlinelibrary.wiley.com/doi/10.1111/opo.12615">increasingly popular</a>.</p> <p>There’s often an added cost, which depends on the specific product. So, is the extra expense worth it?</p> <h2>Blue light is all around us</h2> <p>Outdoors, sunlight is the main source of blue light. Indoors, light sources – such as light-emitting diodes (LEDs) and the screens of digital devices – emit varying degrees of blue light.</p> <p>The amount of blue light emitted from artificial light sources is much lower than from the Sun. Nevertheless, artificial light sources are all around us, at home and at work, and we can spend a lot of our time inside.</p> <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/549210/original/file-20230920-16-tsb23b.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip"><img src="https://images.theconversation.com/files/549210/original/file-20230920-16-tsb23b.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/549210/original/file-20230920-16-tsb23b.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=450&amp;fit=crop&amp;dpr=1 600w, https://images.theconversation.com/files/549210/original/file-20230920-16-tsb23b.jpg?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=450&amp;fit=crop&amp;dpr=2 1200w, https://images.theconversation.com/files/549210/original/file-20230920-16-tsb23b.jpg?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=450&amp;fit=crop&amp;dpr=3 1800w, https://images.theconversation.com/files/549210/original/file-20230920-16-tsb23b.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=566&amp;fit=crop&amp;dpr=1 754w, https://images.theconversation.com/files/549210/original/file-20230920-16-tsb23b.jpg?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=566&amp;fit=crop&amp;dpr=2 1508w, https://images.theconversation.com/files/549210/original/file-20230920-16-tsb23b.jpg?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=566&amp;fit=crop&amp;dpr=3 2262w" alt="Blue light-filtering lenses block some blue light from screens from reaching the eye" /></a><figcaption><span class="caption">Screens emit blue light. The lenses are designed to reduce the amount of blue light that reaches the eye.</span> <span class="attribution"><a class="source" href="https://www.shutterstock.com/image-vector/blue-light-blocking-ray-filter-lens-2286229107">Shutterstock</a></span></figcaption></figure> <p>Our research team at the University of Melbourne, along with collaborators from Monash University and City, University London, sought to see if the best available evidence supports using blue light-filtering glasses, or if they could do you any harm. So we conducted a <a href="https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD013244.pub2/full">systematic review</a> to bring together and evaluate all the relevant studies.</p> <p>We included all randomised controlled trials (clinical studies designed to test the effects of interventions) that evaluated blue light-filtering lenses in adults. We identified 17 eligible trials from six countries, involving a total of 619 adults.</p> <h2>Do they reduce eye strain?</h2> <p>We found no benefit of using blue light-filtering lenses, over standard (clear) lenses, to reduce eye strain with computer use.</p> <p>This conclusion was based on consistent findings from three studies that evaluated effects on eye strain over time periods ranging from two hours to five days.</p> <h2>Do they help you sleep?</h2> <p>Possible effects on sleep were uncertain. Six studies evaluated whether wearing blue-light filtering lenses before bedtime could improve sleep quality, and the findings were mixed.</p> <p>These studies involved people with a diverse range of medical conditions, including insomnia and bipolar disorder. Healthy adults were not included in the studies. So we do not yet know whether these lenses affect sleep quality in the general population.</p> <h2>Do they boost your eye health?</h2> <p>We did not find any clinical evidence to support using blue-light filtering lenses to protect the macula (the region of the retina that controls high-detailed, central vision).</p> <p>None of the studies evaluated this.</p> <h2>Could they do harm? How about causing headaches?</h2> <p>We could not draw clear conclusions on whether there might be harms from wearing blue light-filtering lenses, compared with standard (non blue-light filtering) lenses.</p> <p>Some studies described how study participants had headaches, lowered mood and discomfort from wearing the glasses. However, people using glasses with standard lenses reported similar effects.</p> <h2>What about other benefits or harms?</h2> <p>There are some important general considerations when interpreting our findings.</p> <p>First, most of the studies were for a relatively short period of time, which limited our ability to consider longer-term effects on vision, sleep quality and eye health.</p> <p>Second, the review evaluated effects in adults. We don’t yet know if the effects are different for children.</p> <p>Finally, we could not draw conclusions about the possible effects of blue light-filtering lenses on many vision and eye health measures, including colour vision, as the studies did not evaluate these.</p> <h2>In a nutshell</h2> <p>Overall, based on relatively limited published clinical data, our review does not support using blue-light filtering lenses to reduce eye strain with digital device use. It is unclear whether these lenses affect vision quality or sleep, and no conclusions can be drawn about any potential effects on the health of the retina.</p> <p>High-quality research is needed to answer these questions, as well as whether the effectiveness and safety of these lenses varies in people of different ages and health status.</p> <p>If you have eye strain, or other eye or vision concerns, discuss this with your optometrist. They can perform a thorough examination of your eye health and vision, and discuss any relevant treatment options.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/213145/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><a href="https://theconversation.com/profiles/laura-downie-1469379"><em>Laura Downie</em></a><em>, Associate Professor in Optometry and Vision Sciences, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a></em></p> <p><em>Image credits: Getty Images</em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/do-blue-light-glasses-really-work-can-they-reduce-eye-strain-or-help-me-sleep-213145">original article</a>.</em></p>

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