方法：对55例55眼孔源性视网膜脱离采用在手术显微镜下放视网膜下液，寻找视网膜裂孔，巩膜外冷凝，巩膜外垫压，玻璃体腔注无菌空气等方法进行治疗。

结果：患者50例一次外路手术视网膜脱离完全复位。随访6～12mo，最终复位率为91%，1例二次外路手术复位，4例复发视网膜脱离，行玻璃体切割手术复位。55例患者视力不同程度提高。

结论：在显微镜直视下行外路手术治疗孔源性视网膜脱离是一种简便、安全、有效的方法。

METHODS: In 55 patients(55 eyes)with rhegmatogenous retinal detachment, drainage of subretinal fluid, examination of locating the holes, sclera cryotherapy, scleral buckling, and vitreous cavity injection of filtrated air were performed under surgical microscope.

RESULTS: The retinal reattachment occurred in 50 cases after the primary surgery. The final rate of reattachment was 91% during 6-12mo follow-up. The retinal reattachment occurred in 1 case(recurrent retinal detachment)after the secondary surgery and in 4 cases(recurrent retinal detachment)after vitrectomy. The eyesight was improved with different degrees in 55 cases.

CONCLUSION: The external-route microsurgery for rhegmatogenous retinal detachment is simple, safe and effective.