Supports Visual Function Dietary Supplement Vision Optimizer supports visual function and ocular antioxidant status. Lutein and Zeaxanthin are critical antioxidant carotenoids for the macula of the eyes. Dark green, leafy vegetables include significant amounts of lutein and zeaxanthin. Lutein and zeaxanthin reduce age-related increase in the lens' density. New Zealand Blackcurrant Extract (Ribes nigrum) contains powerful polyphenol antioxidants that reduce eye fatigue and promote eye comfort. Grape Seed Extract (Vitis vinifera) supports the strength of capillaries and other blood vessels in the eyes. Alpha Lipoic Acid, Selenium and Vitamin B2 support the antioxidants glutathione and glutathione peroxidase, which protect the eyes' lenses. Quercetin is an antioxidant that supports lens architecture.