Pupil cycle time.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D005127:Eye Color; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011680:Pupil / Q000502:physiology*; D012030:Refractive Errors / Q000503:physiopathology; D012737:Sex Factors