玻璃体内注气是视网膜脱离复位术中常用的技术。目前文献报道均采用针头垂直于巩膜的穿刺进针方法。此法常需行巩膜半切开,撤针后有时气体或玻璃体自穿刺口逸出,造成气体逸入结膜下或气体丢失、玻璃体脱失或嵌顿于穿刺口等并发症[1、2、3],达不到注气目的。为防止这些开发症,常需用棉棒压迫针孔或让患者 Intravitreal injection of retinal detachment is a commonly used technique. Currently reported in the literature are used needle perpendicular to the sclera puncture needle approach. This method often scleral semi-incision, after the withdrawal needle sometimes gas or vitreous escaping from the puncture, resulting in gas escape into the conjunctiva or gas loss, vitreous loss or incarceration in the puncture and other complications [1,2] 3], can not reach the purpose of gas injection. To prevent these development disorders, often need to use a cotton swab to pinhole or let the patient