The 9 Eye vitamins : Vitamin B3 (Niacin)

If you’re like most people, you’re wondering, “Do vitamins for vision work?” The simple answer is, as we’ve seen with Vitamin A in carrots, yes…but in varying degrees. There are vitamins for vision loss that you can take, but none of them produce miraculous results.

Getting enough vitamins is important at every age, especially natural vitamins in your food. The functions of vitamins can be numerous. Their benefits are evident.  

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 Vitamin B3

The main function of niacin (vitamin B3) in your body is to help convert food into energy. It can also act as an antioxidant (22).
Recently, studies have suggested that niacin may play a role in the prevention of glaucoma, a condition in which the optic nerve of your eye becomes damaged (23).
For example, an observational study on the nutrient consumption of Korean adults and their risk for glaucoma found an association between low dietary intake of niacin and this condition (24Trusted Source).
In addition, an animal study showed that high doses of niacin supplements were effective in preventing glaucoma (25Trusted Source).
Overall, more research on the potential link between niacin and glaucoma is needed.
Supplements should be used with caution. When consumed in high amounts of 1.5–5 grams per day, niacin may pose adverse effects to the eyes, including blurred vision, macular damage and inflammation of the cornea (26Trusted Source, 27Trusted Source).
However, there is no evidence that consuming foods naturally high in niacin has any adverse effects. Some food sources include beef, poultry, fish, mushrooms, peanuts and legumes.

Summary

Studies suggest that niacin may prevent the development of glaucoma, but supplements should be used with caution.