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

术前造影以了解泪囊大小和部位，以选择最佳手术适应证。

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

结论经鼻外泪囊鼻腔合术后泪道通病例，鼻内镜下合口进行检查，针情况进行相应处理，常能使病人再次康复。

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合术治疗慢性泪囊炎15例临床资料。