Abstract:Objective To report a rare complication of oculomotor and trochlear nerve neuritis following botulinum toxin injection for masseter hypertrophy. Case Presentation A previously healthy 31-year-old man presented with a two-week history of left eye (OS) ptosis and diplopia, following botulinum toxin injection over the masseter area for masseter hypertrophy at an aesthetic centre. He had no proptosis or facial asymmetry. Visual acuity was 6/6 in the right eye (OD) and 6/9 in the OS. There was anisocoria, with pupi… Show more
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