目的：比较鼻腔泪囊吻合术(EDCR)、鼻内窥镜下鼻腔泪囊造口术(IEDCR)和Nd：YAG激光泪道成形术治疗慢性泪囊炎的疗效，探讨治疗泪囊炎的最佳手术方法。

方法：随机将182例202眼慢性泪囊炎患者分配为3组，分别采用上述三种手术方法治疗，术后随访 6～ 24mo观察手术疗效。

结果：EDCR组66眼治愈44眼，好转18眼，有效率为93.9%，IEDCR组91眼治愈67眼，好转17眼，有效率为92.3%，Nd：YAG激光泪道成形术组45眼治愈19眼，好转13眼，有效率为71.1%。EDCR组与IEDCR组之间有效率差异不具有统计学意义(P>0.05)，Nd：YAG激光泪道成形术组与其他两组的有效率差异具有统计学意义(P<0.05)。

结论：EDCR和IEDCR均是治疗慢性泪囊炎的可靠方法，尤其是IEDCR微创，值得推广应用。

AIM: To investigate the effects on patients with chronic dacryocystitis treated with three methods: external dacryocystorhinostomy(EDCR), intranasal endoscopic dacryocystorhinostomy(IEDCR)and Nd:YAG laser dacryoplasty, and to explore the best operation method.

METHODS:Totally 182 cases(202 eyes)were randomly divided into three groups, using EDCR, IEDCR and Nd:YAG laser dacryoplasty respectively, postoperative follow- up lasted 6-24months.

RESULTS: The success rate of three groups were 93.9%, 92.3% and 71.1% respectively. There was not significant difference between group EDCR and group IEDCR(P>0.05). There was significant difference between group Nd:YAG laser dacryoplasty and other two groups(P<0.05).

CONCLUSION: EDCR and IEDCR are effective methods. Especially IEDCR is minimal invasive technique and worthy of promotion and application.