Monocular elevation weakness and ptosis: an oculomotor fascicular syndrome?


The topographic arrangement of the fascicular portion of the oculomotor nerve in the midbrain is not known. A patient with infarction involving the lateral portion of the fascicle had isolated monocular elevation paresis and ptosis, suggesting that the fibers destined to the elevators of the eye and eyelid course laterally in the fascicle. 


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