WEBINO syndrome (wall-eyed bilateral internuclear ophthalmoplegia) secondary to ischemic stroke, about a case

WEBINO (wall-eyed bilateral internuclear ophthalmoplegia) syndrome is characterized by bilateral adduction impairment, nystagmus of the abducting eye, and primary gaze exotropia. We present the case of a 68 year-old man who was initially attended in emergency department with sudden onset diplopia. Neurological exploration revealed WEBINO and gait ataxia. Relevant medical history included liver transplantation and subsequent tacrolimus prescription. Complementary exams revealed ischemic lesion in mesencephalic tegmentum, involving medial longitudinal fasciculus and pretectal area. WEBINO syndrome is unfrequent. Among its etiologies, ischemic and demyelinating are the most frequent. In our case, iatrogenic etiology was also considered. Clinical recognition of this syndrome is required to perform adequate exams in order to reach diagnosis.