jaw-·wink·ing syn·drome

[MIM*154600]

an increase in the width of the palpebral fissures during chewing, sometimes with a rhythmic elevation of the upper lid when the mouth is open and with ptosis when the mouth is closed.

Synonym(s): Gunn phenomenon, Gunn syndrome, jaw-winking phenomenon, jaw-working reflex, Marcus Gunn phenomenon, Marcus Gunn syndrome

Farlex Partner Medical Dictionary © Farlex 2012

Gunn phenomenon

(1) Marcus Gunn jaw winking phenomenon.
(2) Marcus Gunn pupillary phenomenon, Gunn pupil 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

jaw-wink·ing syn·drome

(jaw'wingk'ing sin'drōm) [MIM*154600]

Increased width of palpebral fissures during chewing, sometimes with a rhythmic elevation of upper lid when mouth is open and with ptosis when mouth is closed.
Synonym(s): Gunn phenomenon, Marcus Gunn phenomenon.