title: Pupillary constriction during forceful eyelid closure.
abstract: Pupillary constriction during forceful eyelid closure was investigated in 30 normal subjects. The right eye of each subject was filmed with an infrared-sensitive television camera in darkness before, during, and after eyelid closure. Clinically detectable constrictions were found in nine of the 30 subjects (30%). No significant correlation was found between amplitude of constriction and age of subject or baseline pupillary diameter. Forceful eyelid closure should be considered as a technique to elicit pupillary constriction in patients with a poor near response, but many subjects will have no detectable constriction using this maneuver.
authors.affiliation: Department of Ophthalmology, University of Utah Medical School, Salt Lake City.
authors.forename: T A
authors.initials: TA
authors.lastname: Cox
authors.forename: K B
authors.initials: KB
authors.lastname: Digre
mesh_terms: D000328:Adult; D003623:Dark Adaptation; D005143:Eyelids / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011680:Pupil / Q000502:physiology*; D011681:Pupil Disorders / Q000503:physiopathology; D012016:Reference Values; D012025:Reflex, Pupillary; D014741:Video Recording