Vitamin A deficiency.
D000293:Adolescent; D003623:Dark Adaptation; D005260:Female; D006801:Humans; D009755:Night Blindness / Q000175:diagnosis / Q000188:drug therapy; D014801:Vitamin A / Q000008:administration & dosage / Q000633:toxicity; D014802:Vitamin A Deficiency / Q000175:diagnosis / Q000188:drug therapy*
D014801:Vitamin A