Washington: A new study has revealed that omega-3 fatty acids in fish and other seafood have eye-protective effects.Researchers at Wilmer Eye Institute, Johns Hopkins School of Medicine, wanted to know how the risk of age-related macular degeneration (AMD) would be affected in a population of older people who regularly ate fish and seafood.High concentrations of omega-3s have been found in the eye`s retina, and evidence is mounting that the nutrient may be essential to eye health.
Another study at University of Miami Miller School of Medicine has shown that a test that measures the functionality of the eye`s retinal nerve cells may be a key to early detection of glaucoma.The research, led by Mitra Sehi and David Greenfield was based on the knowledge that retinal ganglion cells (RGCs) become dysfunctional as glaucoma progresses and that such changes can be measured using the pattern electroretinogram optimized for glaucoma screening (PERGLA).PERGLA measures the electrical activity of a patient`s retina as he or she views an alternating pattern of black and white lines.PERGLA results showed that RGC dysfunction was reversed and IOP was reduced in all patients following surgery. The patients` central visual field tests improved, as well.Sehi says these results should be interpreted cautiously until confirmed by larger studies. She calls for longitudinal studies to clarify the relationship between reduced IOP and increased RGC response and to further investigate PERGLA assessment of RGC dysfunction as a biomarker for glaucoma.The study appears in December`s Ophthalmology journal. ANI
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