Wiktionary

Marcus Gunn pupil

English edit

 
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Etymology edit

Named after Scottish ophthalmologist Robert Marcus Gunn.

Noun edit

Marcus Gunn pupil (plural Marcus Gunn pupils)

  1. A pupil of the eye that exhibits unusually little constriction when a bright light is swung from the unaffected eye to the affected eye. It can be caused by a lesion of the optic nerve.
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