The technique is used to shine light into the eye to measure the thickness of the retina.
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Advances in eye-exam technology could one day help doctors diagnose people with Alzheimer's disease long before physical symptoms appear, researchers said Thursday. Using equipment similar to the kind already available at most eye doctors' offices, researchers detected signs of Alzheimer's in a small sample of 30 people, according to an elaborate study published in the Journal of the American Medical Association Ophthalmology.About half came back with elevated levels of the Alzheimer's proteins amyloid or tau, suggesting that they would eventually develop dementia.In this group, researchers also found thinning in the retina, something that experts had previously seen in autopsies of people who had died from Alzheimer's disease.The study did not reveal whether the participants with thinning retinas went on to develop Alzheimer's.
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