Dacryocystography was preformed in all patients before operation to confirm the obstructive sity and the size of lacrimal sac.

前造影以了解泪囊的大小和阻塞的部位，以选择最佳手适应证。

Conclusion The lacrimal pathway obstruction after external dacryocystorhinotomy can usually be cured by the transnasal endoscopic examination and treatment.

结论对经鼻外泪囊鼻腔后泪道不通病例，鼻内镜下对进行检查，针对不同情况进行相应，能使病人再次康复。

Method The clinical data of 15 cases with chronic dacryocystisis accepted dacryocystorhinostomy through nasal cavity and lacrimal sac were analyzed retrospectively.

回顾分析经鼻内窥镜下鼻腔泪囊治疗慢性泪囊炎15例的临床资料。