Most people with early-stage glaucoma don't know they have it, even though early treatment is key to reducing vision loss. While detecting a subtle increase in eye pressure helps doctors to diagnose glaucoma, it's challenging ...
May 9, 2024
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Young people who have undergone successful treatment for eye cancer are often subject to bullying and require psychological support, a new study has revealed.
May 9, 2024
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Like many good ideas in science, it started with a walk in the woods. During a stroll through the Berlin Botanic Garden in 2019, HHMI Janelia Research Campus Group Leader Jan Funke and some of his scientific colleagues started ...
May 9, 2024
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Pink eye is an inflammation of the lining of the eyelid and eyeball. The medical term for pink eye is conjunctivitis. The most noticeable symptom will be a pink or red irritated eye or eyes. Other symptoms can include:
May 8, 2024
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Ultraviolet (UV) radiation used for outdoor recreational purposes can be associated with photokeratitis, according to a brief report published online May 2 in JAMA Ophthalmology.
May 7, 2024
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A study published in Nature Reviews Neuroscience by an international team including the Woolcock's Dr. Rick Wassing examined research into sleep disorders over more than two decades to prove a good night's sleep is the perfect ...
May 7, 2024
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Medical College of Georgia scientists report that a gene previously implicated in the development of atherosclerotic lesions in coronary arteries could be key to understanding why many people don't benefit from the most used ...
May 2, 2024
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No home-monitoring vision test has the diagnostic accuracy of hospital eye service follow-up clinics to identify active neovascular age-related macular degeneration (nAMD), according to a study published online April 25 in ...
Apr 29, 2024
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Myopia, or the need for corrected vision to focus or see objects at a distance, has become a lot more common in recent decades. Some even consider myopia, also known as nearsightedness, an epidemic.
Apr 25, 2024
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The discovery of traces of the bird flu virus in pasteurized cow milk in the United States sparked questions over whether the disease could spread to humans, but experts say there is little risk from food contamination.
Apr 25, 2024
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Eyes are organs that detect light, and send signals along the optic nerve to the visual and other areas of the brain[citation needed]. Complex optical systems with resolving power have come in ten fundamentally different forms, and 96% of animal species possess a complex optical system. Image-resolving eyes are present in cnidaria, molluscs, chordates, annelids and arthropods.
The simplest "eyes", such as those in unicellular organisms, do nothing but detect whether the surroundings are light or dark, which is sufficient for the entrainment of circadian rhythms. From more complex eyes, retinal photosensitive ganglion cells send signals along the retinohypothalamic tract to the suprachiasmatic nuclei to effect circadian adjustment.
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