Methods 45 eyes(38 cases)of Congenital dacryocystitis which can not be cured by lacrimal passage irrigating for 7 times,were operated by Hasner valve incision with endoscope of accessory nasal cavity.

• 方法经泪道冲洗七次不能治愈的先天性泪囊炎患者38例(45眼),采用鼻窦内窥镜下鼻泪管开口破膜术治疗。