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Marcus-Gunn Jaw Winking Ptosis Marcus Gunn Jaw Winking Ptosis is the most common form of congenital neurogenic ptosis. Caused by connection between motor branches of trigeminal nerve controlling muscles of mastication and superior division of oculomotor nerve controlling the levator palpebrae superioris. #Marcus #Gunn #Jaw #Winking #Ptosis #clinical #video #neurology #ophthalmology #wink