Plication-Augmented Modified Nishida's Procedure for Large-Angle Esotropia: A Case Series.

Abstract

To evaluate the surgical outcomes of a combined modified Nishida's procedure with medial rectus (MR) recession augmented with lateral rectus (LR) plication in patients with long-standing complete sixth nerve palsy presenting with large-angle esotropia (ET). This retrospective interventional case series included three patients with chronic traumatic complete sixth nerve palsy and large-angle ET (70 to 75 prism diopters [PD]). Postoperatively, two patients achieved orthophoria at distance and near and one patient had a small residual ET of 5 PD at 6 months. The combination of modified Nishida's procedure with MR recession and LR plication appears to be an effective single-stage surgical approach for large-angle esotropia (approximately 70 PD) associated with complete sixth nerve palsy. The technique provides substantial alignment correction, improved abduction, resolution of diplopia, and a reduced risk of anterior segment ischemia compared to full-tendon vertical rectus transposition.