title: Paradoxical increase in dark-adaptation time after vitamin A intake.
mesh_terms: D000221:Adaptation, Ocular / Q000187:drug effects*; D000328:Adult; D002986:Clinical Trials as Topic; D003623:Dark Adaptation / Q000187:drug effects; D005260:Female; D006801:Humans; D007535:Isomerases / Q000494:pharmacology; D008297:Male; D009755:Night Blindness / Q000188:drug therapy; D013997:Time Factors; D014801:Vitamin A / Q000037:antagonists & inhibitors / Q000097:blood / Q000627:therapeutic use*
chemical_list: D014801:Vitamin A; D007535:Isomerases