MacuShield, a derivative of marigolds, is a unique carotenoid eye supplement containing Meso-zeaxanthin, Lutein & Zeaxanthin. The formula combines powerful antioxidants that help protect eye tissue against the potentially damaging effects of free radicals and is designed to specially support macular health. Macu Shield Capsules combines powerful antioxidants that help protect eye tissue against the potentially damaging effects of free radicals and is designed to specially support m health. Protect your eyes Scientists have long known that the yellow colour, or pigment, inside the m comes from the carotenoids, lutein, zeaxanthin, and meso-zeaxanthin and believe these plant compounds help protect the eye by absorbing blue light and neutralising free radicals. This harsh, unavoidable blue light is found in televisions, mobile phone screens, car headlights, sunlight, amongst other sources.