The macula is a highly pigmented, oval-shaped, yellow coloured spot near to the centre of the retina of the eye and is approximately 5mm in diameter. Its yellow colour comes from its high concentrations of zeaxanthin and lutein which are yellow xanthophyll carotenoids. Because of this yellow colour it absorbs excess blue and ultraviolet light which acts as an effective sunblock, much the same as sunglasses, to protect this part of the retina from damage. As we age, a lack of these two essential carotenoids which we usually obtain through our diet causes the macular pigment density to lessen which, in turn, reduces it effectiveness as a sunblock and then the macular can become damaged. Daily supplementation with zeaxanthin and lutein will help to restore the macular pigment density and ensure that the macular is effectively.