TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

MARCUS GUNNS PUPILLARY SIGN [1 record]

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Record 1 2017-05-12

English

Subject field(s)
  • Symptoms (Medicine)
DEF

With unilateral optic nerve or retinal disease, a difference between the pupillary reflexes of the two eyes when a light is shone alternately into each one with the other eye covered; on the affected side there is abnormally slight contraction or even dilation of the pupil.

French

Domaine(s)
  • Symptômes (Médecine)
CONT

En éclairant rapidement l'œil atteint ensuite (dont la pupille est d'abord contractée), on observera une dilatation de la pupille: le temps que le nerf optique envoie son message au 3e nerf, la pupille aura eu le temps de dilater... C'est ce qu'on appelle un déficit pupillaire afférent ou pupille de Marcus Gunn. La découverte de ce signe signifie toujours une atteinte du nerf optique ou une atteinte sévère de la rétine.

Spanish

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