English Explanatory Dictionary

Marcus Gunn pupil

English dictionary entry

Meanings

noun
  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.

Word forms

Marcus Gunn pupil Marcus Gunn pupils

Etymology

Named after Scottish ophthalmologist Robert Marcus Gunn.

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