Marcus Gunn pupil

Mar·cus Gunn pu·pil

(mar'kŭs gŭn),

relative afferent pupillary defect.

Synonym(s): Gunn pupil

Farlex Partner Medical Dictionary © Farlex 2012

Marcus Gunn pupil

A change in the pupillary reflex, caused by unilateral optic nerve or retinal disease.

Method
A light is shone, first on one eye and then the other, with the opposite eye covered; the affected eye demonstrates a slight contraction or dilation of the pupil.

Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

Gunn,

Robert Marcus, English ophthalmologist, 1850-1909.

Gunn dots - minute, highly glistening, white or yellowish specks usually seen in the posterior part of the fundus.

Gunn phenomenon - an increase in the width of the eyelids during chewing. Synonym(s): Gunn syndrome; jaw-winking syndrome; Marcus Gunn syndrome

Gunn pupil - Synonym(s): Marcus Gunn pupil

Gunn sign - compression of the underlying vein at arteriovenous crossings seen ophthalmoscopically in arteriolar sclerosis. Synonym(s): Marcus Gunn sign

Gunn syndrome - Synonym(s): Gunn phenomenon

Marcus Gunn pupil - relative afferent pupillary defect. Synonym(s): Gunn pupil

Marcus Gunn sign - Synonym(s): Gunn sign

Marcus Gunn syndrome - Synonym(s): Gunn phenomenon

Medical Eponyms © Farlex 2012