Penetrating diathermy for retinal microincarceration in the management of giant retinal tears with inverted flaps.

Using vitrectomy, fluid-air exchange, penetrating diathermy, and scleral buckling, surgical success was achieved in 24 of 27 eyes with inverted giant retinal tears (GRTs) and concomitant unfavorable conditions. The follow-up period ranged from 6-52 months. Anatomic success was achieved in 18 eyes. Tears larger than 300 degrees with immobile flaps or advanced proliferative vitreoretinopathy (PVR) contributed significantly to surgical failure (P less than .05). Preoperative (greater than C2) and postoperative PVR figured significantly in unimproved final visual acuity (P less than .05). Penetrating diathermy was effective in fixating the repositioned retina, with little complication. Postoperative therapy with fluid-gas or air exchange or photocoagulation greatly enhanced final success.