Lutein is a member of a group of plant-produced compounds called carotenoids. It is found in foods such as corn, egg yolks and green leafy vegetables. Lutein is structurally related to another carotenoid called zeaxanthin. Both are the predominant carotenoid pigments naturally found in the macular region of the human retina, and both demonstrate antioxidant activities. Lutein supplementation is likely safe when used orally and appropriately 1.