Objective:To assess the efficacy of mitomycin C(MMC)in dacryocystorhinostomy(DCR)and find out an effective adjuvant method to improve the long-term effect of DCR.

• 目的 :探讨丝裂霉素C (MMC)在泪囊鼻腔吻合术 (Dacryocystorhinostomy ,DCR)中的疗效 ,为提高DCR手术的远期疗效寻找一种有效的辅助措施。