Age-related macular degeneration is a leading cause of vision loss in US adults. Over 10 million Americans are affected, more than by cataracts and glaucoma combined. Macular degeneration is caused by the deterioration of the central portion of the retina, the inside back layer of the eye that records the images we see and sends them via the optic nerve from the eye to the brain. The retina’s central portion, known as the macula, is responsible for focusing central vision in the eye, and it controls our ability to read, drive a car, recognize faces or colors, and see objects in fine detail.
A 2020 study published in JAMA randomly assigned over 25,000 participants to take 2,000IU of Vitamin D, 1,000mg of W3 fatty acid (fish oil), both or a placebo every day for five years. The conclusion?
Supplementation "had no overall effect on the primary vision end point of total AMD events". In other words, don't rely on either Vitamin D or fish oil to protect your eyes from this condition.
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