minerals. Vitamins A, C and E in particular improve visual comfort through improved blood flow, sharper vision or bright-dark adjustment. They can also be useful in combating age-related eye diseases, such as [...] to be found especially in vegetable oils, nuts, cereals, soya, milk, asparagus and curly kale. Too low a concentration of these vitamins in the eyes can give rise to opacity of the eye lens and hence cataracts