Blue Berry Plus is a dietary supplement containing blueberry extract combined with lutein, eye extract, vitamin A, copper and zinc. Blueberries can help maintain eye health by supporting blood vessels and providing antioxidant benefits. Zinc, copper, vitamin A and eye extract also contribute to maintaining proper vision. At the same time, the light helps to maintain the proper functioning of the retina. Zinc plays a role in maintaining the proper metabolism of vitamin A. Copper, on the other hand, helps maintain proper energy metabolism, and together with zinc helps protect cells against oxidative stress.