title: Nutritional factors and dark adaptation.
mesh_terms: D003623:Dark Adaptation; D006801:Humans; D009748:Nutrition Disorders / Q000503:physiopathology*; D012160:Retina / Q000503:physiopathology*; D012684:Sensory Thresholds; D014796:Visual Perception; D014801:Vitamin A / Q000008:administration & dosage; D014802:Vitamin A Deficiency / Q000503:physiopathology; D015032:Zinc / Q000008:administration & dosage / Q000172:deficiency
chemical_list: D014801:Vitamin A; D015032:Zinc