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Eye Vitamins containing Lutein and Zeaxanthin are documented in numerous scientific studies to have functional benefits to the healthy function of the retina and macula.
Unlike prescription drugs, eye vitamins and other nutritional supplements are not directly regulated by the United States Food and Drug Administration. As a result, testing of eye vitamins is not under government scrutiny, and it is incumbent on the manufacturer or contracted laboratory to assure potency and purity.
Among eye vitamin ingredients, Lutein and Zeaxanthin are both essential and expensive.
The following results are independent laboratory analysis of Lutein and Zeaxanthin quantity performed on several eye vitamin formulations in November 2011. |