Pupillary constriction during forceful eyelid closure.
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.
Cox
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TA
Department of Ophthalmology, University of Utah Medical School, Salt Lake City.
Digre
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KB
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