Patient Information
Fourteen patients with secondary large-angle exotropia following medial rectus (MR) transection were retrospectively reviewed. The patients included 10 individuals who developed exotropia after endoscopic sinus surgery (ESS) and 4 who developed exotropia after orbital tumor resection (OTR). The mean age of patients was 40.2 years. All patients presented with significant exotropia characterized by outward deviation of the affected eye, associated diplopia in the primary gaze position, and limited ocular motility secondary to medial rectus muscle disruption.