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Marcus Gunn Jaw-Winking Synkinesis With Ipsilateral Eyelid Myokymia
Rawan N Althaqib1, Arif O Khan2,3, Adel H Alsuhaibani3
1Department of Ophthalmology, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia.
Purpose:
To describe a novel observation of ipsilateral eyelid myokymia in the context of Marcus Gunn jaw-winking synkinesis (MGJWS).
Methods:
A retrospective case series of 5 patients observed to have myokymia in the context of MGJWS in 2 tertiary hospitals in Riyadh, Saudi Arabia was conducted. Demographic profile including age and gender, and clinical features were analyzed.
Results:
Five patients (3 males and 2 females) with MGJWS were noted to demonstrate the phenomenon of ipsilateral eyelid myokymia. All but 1 had right-sided MGJWS. The myokymia was seen as upper eyelid twitching in a vertical fashion along the levator palpebrae superioris muscle field of action. All subjects also had ipsilateral Monocular elevation deficiency.
Conclusion:
Ipsilateral upper eyelid myokymia is a potential feature of MGJWS. Monocular elevation seems to be a constant feature among MGJWS patients with levator muscle myokymia.Marcus Gunn jaw-winking synkinesis (MGJWS) is not well understood. Ipsilateral eyelid myokymia is a potential feature of MGJWS. This finding suggests that peripheral dysinnervation is likely to be a part of MGJWS.Supplemental Digital Content is available in the text.
