411 REFERENCE · Wiktionary
Marcus Gunn pupil
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
Named after Scottish ophthalmologist Robert Marcus Gunn.
Noun
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.
en eponyms