The clinical features of esotropia after bare scleral pterygium surgery and dipolpia treatment results were evaluated in the present study.

Twenty eyes of 12 patients who had esotropia after bare sclera pterygium surgery from 2008 to 2011 were retrospectively investigated.

Diplopia occurred at 2.8 ± 1.6 months (1-6 months) after pterygium surgery. The mean pre-operative angle of esotropia was 19.4 ± 8.9 PD (8-40 PD) at distance and 16 ± 7.3 PD (0-30 PD) at near. All patients showed limitation of abduction in the pterygium operated eye. Two patients were prescribed prism glasses, 2 patients underwent conjunctiva surgery, and medial rectus recession with simultaneous intraoperative adjustment surgery was performed in 8 patients. An additional strabismus operation was required for 2 patients who received conjunctival surgery due to diplopia recurrence. Seven patients (70%) showed orthotropia at 3 months.

In this study, diplopia following postoperative adhesion caused by bare sclera pterygium surgery technique was observed. Conjunctiva-perimuscular scar tissue removal and medial rectus recession were effective methods in eliminating diplopia.