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We all know that too much sun exposure can damage the eyes, but the sun is also a great source of vitamin D, and we need vitamin D for good eyesight.

Safe sun exposure, fish oils, fatty fish and, to a lesser extent, beef liver, cheese, egg yolks and certain mushrooms contain this vital nutrient which acts on more than 4,000 genes.

Vitamin D3 supplementation has been shown to help prevent age-related macular degeneration, reduce retinal inflammation and improve vision.

Read up on 6 more essential nutrients that could save your eyesight.