小梁切除术与巩膜全层切除术相比 ,术后浅前房、脉络膜脱离和感染等并发症明显减少 ,但术后眼压下降幅度及持久性较巩膜全层切除术差。抗代谢药物的应用 ,虽然能提高手术成功率 ,但因其并发症明显而受到一定的局限 [1 ,2 ]。为此人们试图找到一种更安全、疗效更确切的方法 ,隧 Trabeculectomy compared with scleral resection, the postoperative shallow anterior chamber, choroidal detachment and infection and other complications significantly reduced, but postoperative IOP decreased and persistent than the scleral full-thickness resection worse. Although the application of anti-metabolite drugs can improve the success rate of surgery, it is limited by its obvious complications [1,2]. To this end, people try to find a safer, more effective method of tunneling