Nutritional Supplements for Eye Disease

by Charlolle Waterworth

According to the National Eye Institute, the number of Americans affected by eye disease will increase as the population ages. The National Eye Institute estimates that by 2020, cases of blindness and low vision will increase substantially. A number of conditions can affect the eye such as age-related macular degeneration, glaucoma, cataract and diabetic retinopathy. Although nutritional supplements should never be used in place of medical treatment, some may help to protect the eyes, alleviate disease symptoms and aid recovery.
Lutein

Lutein is an antioxidant found in a host of foods such as kale, spinach, peas, corn and eggs. According to the American Optometric Association lutein filters high-energy blue light to protect the retina from damage. Lutein also neutralises the effects of free radicals which can eye cells and may help prevent cataract formation and age-related macular degeneration. The body cannot manufacture lutein itself so it must be obtained through a balanced diet that is rich in luetin-containing foods. Lutein is also available as a dietary supplemement. The American Optometric Association notes that there is no recommended daily intake for lutein, though consuming 10mg per day day may confer health benefits.

Omega-3 Fatty Acids

According to an article published in April 2010 in the medical journal "Prostaglandins, Leukotrines and Essential Fatty Acids" omega-3 fatty acids may alleviate symptoms of dry eye and help protect the cornea from erosion and ulceration. The body cannot manufacture omega-3 fatty acids but they can be obtained by eating foods such as oily fish and nut oil, or by taking a nutritional supplement. Do not take omega-3 fatty acid supplements if you have been prescribed an anti-coagulant or if you have a bleeding disorder.
Zeaxanthin

Like Lutein, Zeaxanthin is an antioxidant found in leafy green vegetables and eggs. The American Optometric Association notes that it may reduce the risk of developing age-related macular degeneration and cataracts. High quantities of Zeaxanthin are present in the retina where it protects and maintains cells and filters out harmful blue light. The American Optometric Association recommends consuming zeaxanthin daily by eating a healthy balanced diet; however, since Western diets tend to be low in zeaxanthin, taking a zeaxanthin supplement may be appropriate.