Lutein and Zeaxanthin are carotenoids. Carotenoids are pigments found in plants and in your retina. Supplementing these pigments helps increase their density in your retina. They also absorb high-energy blue and ultraviolet light that can damage your eyes. Also found naturally in your eyes, zinc is a powerful antioxidant that protects against cell damage. Zinc is the primary mineral in the AREDS2 formulation. When taking zinc, copper absorption is lessened. It’s recommended that zinc be combined with copper supplements.