泪道阻塞引起的溢泪症是一种常见、多发的眼病,在沙眼尚未得有效控制的我国农村、流泪、溢泪是沙眼引起的常见并发症之一,若不彻底治疗有潜在眼内、外感染的危险。鼻泪管下端是一个解剖学狭窄段,易受鼻腔病变的影响出现阻塞。泪道起始部(泪点、泪小管、泪总管)管径窄细,位置表浅,并与 Lacrimal duct obstruction caused by tears is a common, multiple eye disease, trachoma has not yet effectively controlled rural China, tears, tears overflow is one of the common complications caused by trachoma, if not completely treated with potential intraocular, The risk of external infection. The lower end of the nasolacrimal duct is an anatomical narrow segment that is susceptible to obstruction of the nasal cavity. Lacrimal origin (punctum, lacrimal duct, tear duct) narrow diameter, superficial position, and with