Methods Using triangular lamellar and sclera flap and making a 1 × 4mm vertical excision of behind sclera . Then make iridectomy under direct view ; suture 1 point on the top of triangular lamellar sclera flap and suture bulbar conjunctiva continuously .

方法：采用三角形板层巩膜瓣，切除小梁组织1.0～1.2mm，直视下做虹膜根切， 三角形板层巩膜瓣顶缝合1针，连续 缝合球结膜。