The macula is the part of the eye which is responsible for central and detailed, colour vision. Scientists have long known that the yellow colour, or pigment, at the macula comes from three carotenoids: Meso-Zeaxanthin, Zeaxanthin and Lutein. These plant compounds help protect the eye by absorbing harmful blue light which is present in regular sunlight as well as computer screens and car headlights. Free radicals cause the ageing process in the back of the eye, and are produced naturally by the body, but are greatly increased due to factors such as smoking, obesity, light exposure and pollution. By absorbing blue light, MacuShield is proven to enhance visual performance in terms of glare vision for driving at night. MacuShield patented formulation brings together all three of these carotenoids to enhance visual performance and to maintain eye health.Other changes:? There is no age limit on the product? We have a new image attached to use as the main image