Ocular hypothermia depresses the human pupillary light reflex.
Twelve human volunteers were studied to determine the effect of eye surface cooling on the parameters of the light reflex. Surface cooling resulted in a 38% decrease in the maximum constriction velocity and a 36% decrease in the maximum redilation velocity. These changes were thought to be the result of a "sluggish" response of the pupillary sphincter.
Larson
M D
MD
Department of Anesthesia, University of California, San Francisco 94143-0648.
O'Donnell
B R
BR
Merrifield
B F
BF
D000328:Adult; D006801:Humans; D007036:Hypothermia, Induced; D007498:Iris / Q000502:physiology; D008027:Light; D008297:Male; D008875:Middle Aged; D012025:Reflex, Pupillary / Q000502:physiology*; D013696:Temperature