NOW&ampreg; Clinical Strength Ocu Support has been formulated to provide comprehensive nutritional protection for the eyes. Each serving contains 10 mg of available Lutein, a critical pigment of the macula, lens, and other ocular tissues. Lutein is a powerful antioxidant related to beta-carotene that defends the eye from the ravages of sunlight. NOW has also included Green Tea Extract, Alpha-Lipoic Acid, Grape Seed Extract, and other synergists in this formula to maximize its antioxidant potential.*