[The significance of vitamins and the trace elements for the blind].
D001361:Avitaminosis; D006801:Humans; D008903:Minerals; D014131:Trace Elements / Q000172:deficiency*; D019987:Persons with Visual Disabilities; D014801:Vitamin A; D014815:Vitamins
D008903:Minerals; D014131:Trace Elements; D014815:Vitamins; D014801:Vitamin A
TRACE ELEMENTS/deficiency; VITAMINS/deficiency