title: Visual function and vitamin A/zinc nutriture in patients with complaints of night blindness.
abstract: Eighteen adults with night vision complaints showed significantly increased/final rod thresholds as compared to their age- and sex-matched controls. Vitamin A and zinc levels did not differ between the two groups. Vitamin A supplementation of three subjects produced changes in final rod thresholds and serum vitamin A levels. These changes did not produce subjective improvements in night vision.
mesh_terms: D000328:Adult; D003623:Dark Adaptation; D005260:Female; D006197:Hair / Q000032:analysis; D006801:Humans; D008297:Male; D008875:Middle Aged; D009755:Night Blindness / Q000188:drug therapy / Q000378:metabolism* / Q000503:physiopathology; D009907:Optometry; D014787:Vision Tests; D014801:Vitamin A / Q000378:metabolism* / Q000627:therapeutic use; D015032:Zinc / Q000378:metabolism*
chemical_list: D014801:Vitamin A; D015032:Zinc