Vitamins and minerals are essential for all aspects of human function. There is, however, considerable controversy regarding the types and quantities of these nutrients needed to insure maximum performance. In this paper, basic nutritional concepts are reviewed, specific information is presented on selected vitamins and minerals, and the effects of vitamin and mineral nutriture on visual function is discussed. It is concluded that, apart from diseases associated with frank deficiencies or toxic levels, relatively little is known about how vitamin and mineral levels can contribute to optimum visual performance.
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