COMPARED RATE OF POSTOPERATIVE PROLIFERATIVE VITREO-RETINOPATHY (PVR)AFTER TRANSSCLERAL DIODE RETINOPEXY OR TRANSPUPILLARY ARGON RETINOPEXY IN RHEGMATOGENOUS RETINAL-DETACHMENT ASSOCIATED WITH PREOPERATIVE GRADE-B PVR

Purpose To compare the rate of severe postoperative PVR in primary rhe gmatogenous retinal detachments (RD) associated with preoperative grad e B PVR and managed either with transpupillary Argon laser photocoagul ation OF. transscleral Diode laser photocoagulation. Material and meth ods We evaluated 72 primary rhegmatogenous retinal detachment associat ed with preoperative grade B PVR (retinal tears with curled posterior edges), referred before any failed attempt to reattach the retina. Ele ven RD were due to giant tear The retinopexy was performed using trans pupillary Argon laser photocoagulation in 46 eyes, and transscleral Di ode laser photocoagulation in 26 eyes. Follow up was 6 to 30 months. S tatistical analysis used Chi-square test, and variance analysis. Resul ts The overall rate of postoperative PVR was 6.9 % (5/72 eyes). The ra te of postoperative PVR was 6.5 % (3/46) in eyes managed with Argon la ser photocoagulation and 7.7 % (2/26) in eyes managed with Diode laser photocoagulation (p > 005). The rate of postoperative PVR in RD due t o horseshoe tears was 5.4 % (2/37) in eyes managed with Argon laser an d 8.3 % (2/24) in eyes treated with Diode laser (p >.0.05). The rate o f postoperative PVR in giant tear was 11.1 % (1/9) in eyes managed wit h Argon laser photocoagulation and 0 % (0/2) in eyes managed with Diod e laser photocoagulation (p > 005). Conclusion In the present series t he rate of postoperative VR was nor influenced by the method of photoc oagulation (transpupillary Argon laser or transscleral Diode laser). T herefore each technique can be used as the retinopexy method in primar y rhegmatogenous retinal detachment associated with preoperative grade B PVR.