Vertical Duane's retraction syndrome.
OBJECTIVE
We report three patients with a rare variant of Duane's retraction syndrome.


METHODS
Eye movements were recorded by electro-oculography. One patient underwent electro-myography.


RESULTS
All patients showed V-incommitance and twitch abduction on vertical saccades. Electromyography showed lateral rectus muscle firing activity during upgaze and downgaze.


CONCLUSIONS
Our patients showed synergistic innervation between the lateral rectus muscle and ipsilateral vertical acting muscles documented by electromyography.
Weinacht
S
S
Department of Strabismus and Neuroophthalmology, Kantonsspital St. Gallen, Switzerland.
Huber
A
A
Gottlob
I
I
D000293:Adolescent; D000328:Adult; D004370:Duane Retraction Syndrome / Q000209:etiology / Q000473:pathology* / Q000503:physiopathology; D004576:Electromyography; D004585:Electrooculography; D005133:Eye Movements; D005260:Female; D006801:Humans; D008297:Male; D009801:Oculomotor Muscles / Q000294:innervation / Q000503:physiopathology; D009802:Oculomotor Nerve / Q000002:abnormalities / Q000503:physiopathology