方法：选取不同部位的泪道阻塞患者50例54眼，在三通道泪道内窥镜下采用激光或微型环钻清除泪道阻塞，配合使用我科独创的双套环技术引导置管，3～6mo后拔管，术后随访3～6mo，观察疗效。

结果：选取54眼中47眼治愈，无溢泪，泪道冲洗通畅； 5眼有效，轻微溢泪，泪道冲洗通而不畅； 2眼无效，仍溢泪，泪道冲洗不通。总有效率达96%。

结论：三通道双套环引导治疗泪道阻塞较传统手术方法上有了跨时代的改变，创伤小，避免了假道形成，术后恢复快，并发症少，大大提高了泪道阻塞手术的成功率。

METHODS: Fifty cases(54 eyes)of lacrimal obstruction were treated by laser or micro-drill under triple channel lacrimal endoscope with double ring guided intubation created by our department. The silicone tube was extracted at 3～6mo of postoperation. All cases were followed up 3～6mo.

RESULTS:Of total 54 eyes, 47 eyes were cured, and lacrimal passage was clearly flushed without epiphora; 5 eyes were improved, but lacrimal passage was clearly flushed with slight epiphora; 2 eyes were recurred, and lacrimal passage was not clearly flushed with epiphora. Total effective rate was 96%.

CONCLUSION:Triple channel double ring guided treatment of lacrimal obstruction has greatly improved traditional operation. It has dramatically increased success rate of lacrimal obstruction operation with little invasion, avoiding formation of false lacrimal passage, quick recovery and less complications.