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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.
jaw-wink·ing syn·drome(jaw'wingk'ing sin'drōm)
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