What are the main harms caused by vitamin A deficiency? How does this vitamin act in the physiology of vision?
Deficiency of vitamin A (retinol) may cause night blindness, corneal dryness (xerophthalmia) and predisposition to skin injuries. In the physiology of vision, vitamin A participates in the formation of rhodopsin, a pigment responsible for the visual perception in less illuminated places. Nutrition Vitamins - Image Diversity: vitamin A deficiency
