方法：回顾性分析我院2010-10/2013-12单侧慢性泪囊炎患者94例， 行外路泪囊鼻腔吻合术，手术方法在传统术式上进行以下改良：(1)麻醉后填塞鼻腔，减轻疼痛和出血；(2)手术中不切断内眦韧带；(3)只缝合鼻黏膜上瓣；(4)置管；(5)皮肤分层美容缝合。术后随访3mo～2a，观察疗效。

结果：患者94例94眼，术后93例93眼溢泪、溢脓症状完全消失，泪道冲洗通畅，有效率99% ； 无效1例1眼(1%)溢泪，泪道冲洗不通畅。

结论：改良外路泪囊鼻腔吻合术操作简单、治愈率高、远期疗效确切，是治疗慢性泪囊炎的有效手术方法。

METHODS:Retrospective analysis on 94 patients with monocular chronic dacryocystitis in our hospital from October 2010 to December 2013 were taken the improved external dacryocystorhinostomy. The improved surgery which was based on the traditional surgery including: 1. Nasal packing after anesthesia to relieve the pain and bleeding; 2. Not cut the medial palpebral ligament; 3. Suture the upper membrane of the nasal mucosa only; 4. Pipe placement; 5. Skin layered hairdressing suture. The patients were follow-up 3mo-2a after operation.

RESULTS: Ninety-three cases of patients cured with completely asymptomatic, no epiphora or mucopurulent secretion flow out from the lacrimal punctum, unobstructed lacrimal irrigation, the efficiency is 99%, 1 case of patient was epiphora, obstructed lacrimal irrigation, 1% was invalid.

CONCLUSION: The improved external dacryocystorhinostomy is an effective surgical method which is easy to operate with high cure rate and its long term effect is precise.