Ocuplus 30comp is a food supplement that helps maintain visual function. it is made with vitamins C and E, zinc, copper and carotenoids (lutein, zeaxanthin and astaxanthin). astaxanthin, which cannot be synthesized by the human body, must be ingested from the diet, normally from marine organisms. lutein and zeaxanthin are found in high concentrations in the macula lutea, the central part of the retina and responsible for central vision. vitamins c and e protect cells against oxidative damage. zinc is a trace element that helps protect cells against oxidative damage and contributes to the normal metabolism of macronutrients. it also contributes to the maintenance of normal vision. copper is an essential trace element that contributes to the maintenance of normal connective tissue and to the protection of cells against oxidative damage. zinc supplements should always be accompanied by copper.