... > undernutrition > identification of malnourished patients > nutritional status diagnosis > nutritional deficiency > specific deficiency > micronutriment deficiency > vitamin deficiency > vitamin A deficiency > night blindness

... > disease > metabolic diseases > nutrition disorder > specific deficiency > micronutriment deficiency > vitamin deficiency > vitamin A deficiency > night blindness

... > undernutrition > identification of malnourished patients > nutritional diagnosis > vitaminic status > vitamin deficiency > vitamin A deficiency > night blindness

disease > ocular disease > night blindness