管径只有0.5mm的泪小管断裂,如不及时修复,势必导致永久性溢泪。显微手术的开展为此类过去认为难以治愈的病例带来了福音。本文报告显微镜(Opton8型)下施行泪小管断裂吻合修复的方法和体会。手术方法:滑车下、筛前及眶下神经阻滞麻醉后,用泪道探针自下泪点插入,以辩明泪管断裂位置。从上泪点注入消毒牛奶少许,从伤口深部有白色牛奶溢出,以此为标志找到泪小管内侧断端。经注水证实为泪小管后,用8—0尼龙线作泪小管内侧断端予置缝线4根。扩张下泪点,插入空心钝头 Only 0.5mm diameter of the canalicular laceration, if not repaired in time, will inevitably lead to permanent overflowing tears. Microsurgery has brought the gospel to such previously considered incurable cases. This article reports under the microscope (Opton8 type) method and experience of repair of lacrimal duct rupture repair. Surgical methods: under the pulley, before screening and infraorbital nerve block anesthesia, with lacrimal probe insertion from the tear point to identify the location of tear duct rupture. A small amount of disinfection milk was injected from the punctum, and white milk spilled from deep into the wound as a marker to find the stump end of the canaliculus. After water injection confirmed lacrimal duct, with 8-0 nylon line for the inner side of the lacrimal canal to set the suture 4. Expand the next tear point, insert hollow blunt