To investigate the effect of conjunctival mini-flap operation to treat restrictive strabismus in patients with diplopia caused by conjunctival adhesion and hyperplasia after periocular surgery.

Case series study.

Eleven patients with diplopia and restrictive strabismus attributable to conjunctival dysplasia after periocular surgery underwent a conjunctival mini-flap surgery without a muscle operation and were followed-up at 1, 3, and 6 months after surgery. The Hess screen test, binocular single vision field with Goldmann perimetry, and extraocular muscle movement were analyzed pre- and postoperatively. Patient satisfaction with the cosmetic results of conjunctival mini-flap operation was also investigated.

The mean preoperative alignment deviation in primary position was 10.4 ± 5.6 prism diopters (PD). Diplopia in the primary position was resolved in 95% of the patients. The mean postoperative deviation was 1.36 ± 2.34 PD at the primary position. No significant complications or recurrences were noted after mean 9.5 ± 4.2 months follow-up.

Conjunctival mini-flap operation is an effective and safe surgical technique for treating patients with diplopia and restrictive strabismus following periocular surgery.