orbicularis pupillary reflex

orbicularis pupillary reflex
unilateral contraction of the pupil, followed by dilatation after closure or attempted closure of eyelids that are forcibly held apart. Called also Galassi pupillary, orbicularis, or Westphal-Piltz phenomenon and Gifford, Gifford-Galassi, or Westphal pupillary r.

Medical dictionary. 2011.

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Look at other dictionaries:

  • Westphal phenomenon pupillary reflex — West·phal phenomenon, pupillary reflex (vestґfahl) [Alexander Karl Otto Westphal, German neurologist, 1863–1941] orbicularis pupillary reflex …   Medical dictionary

  • Westphal pupillary reflex — Westphal Piltz reflex orbicularis pupillary r …   Medical dictionary

  • orbicularis phenomenon — orbicularis pupillary reflex …   Medical dictionary

  • orbicularis reaction — orbicularis pupillary reflex …   Medical dictionary

  • orbicularis reflex — orbicularis pupillary r …   Medical dictionary

  • Galassi pupillary phenomenon — orbicularis pupillary reflex …   Medical dictionary

  • Reflex — A reaction that is involuntary. The corneal reflex is the blink that occurs with irritation of the eye. The nasal reflex is a sneeze. * * * 1. An involuntary reaction in response to a stimulus applied to the periphery and transmitted to the… …   Medical dictionary

  • Gifford operation reflex — Gif·ford operation, reflex (gifґərd) [Harold Gifford, American oculist, 1858–1929] see under operation and see orbicularis pupillary reflex, under reflex …   Medical dictionary

  • Piltz reflex sign — (pilts) [Jan Piltz, Polish neurologist, 1870–1931] see attention reflex of pupil and orbicularis pupillary reflex, under reflex …   Medical dictionary

  • Westphal-Piltz phenomenon reflex — West·phal Piltz phenomenon, reflex (vestґfahl piltsґ) [A.K.O. Westphal; Jan Piltz, Austrian neurologist, 1870–1930] orbicularis pupillary reflex …   Medical dictionary

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