title: Testing the pupil in Horner's syndrome.
mesh_terms: D000662:Amphetamines; D006732:Horner Syndrome / Q000175:diagnosis*; D006801:Humans; D011680:Pupil / Q000187:drug effects*; D010136:p-Hydroxyamphetamine
chemical_list: D000662:Amphetamines; D010136:p-Hydroxyamphetamine