方法：收集73例78眼慢性泪囊炎患者在鼻内窥镜下泪囊鼻腔开放术中联合应用丝裂霉素，随访6～12mo观察疗效。

结果：所选患者中66例70眼痊愈(90%)，2例3眼好转(4%)，5例5眼无效(6%)。复发病例5例5眼中，2眼再予鼻内窥镜下清除肉芽，扩大造口，浸有0.4g/L丝裂霉素棉片放置创面约5min，后置麻醉导管，另3眼转上级医院行泪道激光，均获得成功。所有患者没有发生严重的手术并发症。

结论：鼻内镜下泪囊鼻腔开放术联合应用丝裂霉素治疗慢性泪囊炎的疗效肯定。

METHODS: Totally 73 cases(78 eyes)with chronic dacryocystitis were treated with dacryocystorhinostomy under endoscopy with mitomycin and followed up for 6-12mo.

RESULTS: In the 73 patients, 66 cases with 70 eyes(90%)were cured, 2 cases with 3 eyes(4%)improved, 5 cases with 5 eyes(6%)not changed. In the recurrent 5 eyes, 2 eyes were treated under endoscopy to remove granulation, enlarge the opening, then anesthetic tube was placed after cotton sheet with 0.4g/L mitomycin was put on the incision for 5min.The rest 3 eyes were treated in superior hospital with laser, and all were successful. There was no severe complication observed.

CONCLUSION:Dacryocystorhinostomy under endoscopy with mitomycin for chronic dacryocystitis is effective.