Lutein and Zeaxanthin are types of pigments found in plants called carotenoids. Carotenoids are what give many fruits and vegetables their bright red, orange and yellow colors. Even though they cannot be produced in the body, Lutein and Zeaxanthin from the diet are stored in the eyes, particularly in the macula area of the retina. Lutein's antioxidant properties help filter out high energy blue light from the sun and artificial light, which may otherwise induce oxidative stress and possible free-radical damage to the eyes, as well as to the skin.**