Conclusions: ECI and washing with MMC and Chymotrypsin is a easy and valuable method to operate to treat LDO.

• 结论:硬膜外导管插管加丝裂霉素C及糜蛋白酶冲洗是一种治疗泪道阻塞的对设备要求不高简便易行且行之有效的方法。