Presently, for a definitive diagnosis of Alzheimer's disease, doctors have to perform a PET scan of patients' brains. Soon, however, a simple eye scan may be all that's required – and it could catch the disease sooner than ever before.
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People that wear contact lenses may be familiar with the irritation that comes from dried-out eyes, which can cause damage to ocular tissue. Scientists say that they can better avert this danger, and it involves a molecule found in the stomach of pigs.
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Resulting in reduced or limited vision, Nystagmus affects nearly one in 400 people, and is euphemistically referred to as “dancing eyes”. A new procedure to treat the condition has been developed involving implanting magnets behind a person’s eyes to stabilize the uncontrollable eye movements.
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Although mechanical irises are already a standard feature in cameras, scientists have recently created an autonomous artificial iris that's much more similar to those found in the eye – it may even eventually be able to replace damaged or defective ones.
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Age-related macular degeneration (AMD), is a common eye disorder that can result in the loss of one’s central vision. A team of scientists has developed a new treatment for the disorder that replaces the current monthly injection into the eye with a simple eye drop.
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Repairing people's sense of sight by way of retinal implants is a field of research that is seeing some rather promising advances. Now researchers say they have broken new ground in the area, which brings with it the prospect of more successful integration in the human body.
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When it comes to eye exams, nobody likes getting the pupil-dilating eye drops. Thanks to a compact new camera being developed at the University of Illinois and Harvard Medical School/Massachusetts Eye & Ear, however, those drops may become a thing of the past.
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Engineers have tested a nano-system that could restore sight through a retinal implant that responds to light by directly stimulating the neurons that send visual signals to the brain. Unlike other systems, the new device requires no external sensors, and can provide a much higher resolution.
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In the middle of the Devonian period, about 385 million years ago, our early ancestors made those crucial first steps out of the water and onto dry land. A new hypothesis suggests that evolving better eyes, not limbs, was the first step towards driving early tetrapods out of ponds in search of food.
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Weird is the new normal in the ocean’s twilight zone, home to all kinds of fantastic creatures, including the cockeyed squid whose mismatched eyeballs have long puzzled scientists. Now thanks to a new study, we might finally know the reason for its strange visage.
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