title: The cause of the Argyll Robertson pupil.
mesh_terms: D000818:Animals; D006801:Humans; D008027:Light; D008636:Mesencephalon / Q000503:physiopathology*; D011680:Pupil; D051381:Rats; D012021:Reflex, Abnormal / Q000209:etiology*; D013564:Sympathetic Nervous System / Q000503:physiopathology*