How does Ocu-Blue protect against blue light? Healthy eyes have their own protective layer of pigment-saturated cells called the retinal pigment epithelium. These pigmented cells are naturally rich in lutein, zeaxanthin, and other carotenoids provided by an antioxidant-rich diet. Recent scientific research shows that daily supplementation with the specific antioxidant phyto-nutrients used to formulate Ocu-Blue prevents and mitigates the damaging effects of blue light. The three super-potent, natural source carotenoid antioxidants in Ocu-Blue act synergistically as cellular protectors and rejuvenators for our eyes.