Gunn sign

Gunn sign

(gŭn),
1. compression of the underlying vein at arteriovenous crossings seen ophthalmoscopically in arteriolar sclerosis; Synonym(s): Gunn crossing sign
2. on alternate stimulation with light, the pupil of an eye with optic nerve transmission defect constricts poorly or even dilates when stimulated (a relative afferent pupillary defect).
Synonym(s): Marcus Gunn sign

Gunn sign

(gŭn sīn)
1. Compression of the underlying vein at arteriovenous crossings seen ophthalmoscopically in arteriolar sclerosis.
2. On alternate stimulation with light, the pupil of an eye with optic nerve transmission defect constricts poorly or even dilates when stimulated (a relative afferent pupillary defect).
Synonym(s): Marcus Gunn sign.

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