title: The pupil in stroke.
abstract: Pupil sizes were assessed in 100 patients admitted to an intensive care stroke unit over a 1-year period to determine if differences existed and if anisocoria might help in diagnosis. From life-size photographs the pupil diameters were measured accurately, and clinical information compiled by the neurology staff was studied. Of the 19 patients with anisocoria 13 had a final diagnosis of stroke. This incidence of anisocoria, 16%, is similar to that in a normal population (20%). The side of the mydriasis was unrelated to the site of the lesions except when the stroke was due to a brainstem infarction; then ipsilateral Horner's syndrome occurred.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002561:Cerebrovascular Disorders / Q000503:physiopathology*; D005260:Female; D006732:Horner Syndrome / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011680:Pupil