Lutein is a potent antioxidant carotenoid found in abundance in fruits and green leafy vegetables. Lutein is also one of the dominant pigments found in the macular region of the retina. In the macula lutein is selectively accumulated from plasma and filters out visible blue light. Recent studies suggest this filtering process sevens to protect the retina from damage caused by light or oxidation. Source Naturals LUTEIN is extracted from the marigold flower and purified by an exclusive patented process (US Patent No. 5382714).Other products from HerbsPro