December 1991
Volume 32, Issue 13
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Articles  |   December 1991
Ocular hypothermia depresses the human pupillary light reflex.
Author Affiliations
  • M D Larson
    Department of Anesthesia, University of California, San Francisco 94143-0648.
  • B R O'Donnell
    Department of Anesthesia, University of California, San Francisco 94143-0648.
  • B F Merrifield
    Department of Anesthesia, University of California, San Francisco 94143-0648.
Investigative Ophthalmology & Visual Science December 1991, Vol.32, 3285-3287. doi:
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    • Get Citation

      M D Larson, B R O'Donnell, B F Merrifield; Ocular hypothermia depresses the human pupillary light reflex.. Invest. Ophthalmol. Vis. Sci. 1991;32(13):3285-3287.

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Abstract

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.

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