探讨两种巩膜外手术方式治疗孔源性视网膜脱离的效果。 方法：选取我院孔源性视网膜脱离（RRD）患者220例220眼，其中复杂性视网膜脱离70例70眼，非复杂性视网膜脱离150例150眼。分别实施巩膜环扎+外加压+冷凝+放液（或不放液）术及巩膜外加压+冷凝+放液（或不放液）术。 结果：两种手术方式对复杂性RRD和非复杂性RRD的效果均无统计学意义（P>0.05），但非复杂性视网膜脱离患者一次性成功率为89.3％，而复杂性视网膜脱离患者一次性成功率仅为72.9％。 结论：巩膜外手术对非复杂性视网膜脱离是一种行之有效的手术。而巩膜环扎在视网膜脱离手术中并非完全必要

To evalutate the clinical effects of patients with rhegmatogenous retinal detachment（RRD）treated by outer-scleral operation. METHODS:Totally 220 cases (220 eyes) with RRD at our hospital were analysed randomly.There were 70 cases (70 eyes) suffering from complicated RRD and 150 cases (150 eyes) from non-complicated RRD.They were performed scleral encircling and buckling associated with cryotherapy and drainage(or without drainge)or scleral buckling associated with cryotherapy and drainage(or without drainge)respectively. RESULTS:No significant difference was shown between the two operations for complicated RRD and non-complicated RRD. The rate of anatomic retinal attachment of non-complicated RRD reached 89.3%,while that of complicated RRD stood at 72.9%. CONCLUSION:Outer-scleral operation is a kind of effective surgery to treat non-complicated RRD,it is better to perform vitreoretinal surgery on complicated RRD. Scleral encircling is not very necessary in the RRD surgery.