In the IOP control, there were no differences between two groups after surgery except 18 months. The IOP of the limbus-based group at 18 months was lower than that of fornix-based group (10.7 +/- 9.5 14.8 +/- 11.2 mmHg, p=0.030). In the postoperative complications, the number of persistent hypotony in limbus-based group was more than that of fornix-based group (6 1 eyes, p=0.048). There were no differences between two groups in the success rates without additional medication, but the success rates of fornix-based group with additional medication at 12 months were higher than those of limbus-based group (44.4 77.3%, p=0.033). Also the cumulative success rates of fornix-based group with medication were higher than those of limbus-based group (p=0.040).
CONCLUSIONS:
Fornix-based conjunctival flap which has shown lower persistent hypotony and higher success rates than that of limbus-based conjunctival flap is recommendable for trabeculectomy with MMC.