title: Relationship between age and pupil size: some additional variables.
mesh_terms: D000221:Adaptation, Ocular; D000328:Adult; D000367:Age Factors; D003624:Darkness; D006801:Humans; D008027:Light; D008297:Male; D008875:Middle Aged; D011680:Pupil / Q000502:physiology*; D012025:Reflex, Pupillary; D012494:Sampling Studies; D013223:Statistics as Topic