Objective:To observe the efficacy of extradural catheter intuba-tton and washing with mitomycin C and Chymotrypsin in the treatment of lacrimal duct obstruction.

• 目的:探讨硬膜外导管插管加丝裂霉素C及糜蛋白酶冲洗治疗泪道阻塞的治疗效果。