Methods Random sampling,200 patients in each group of put or no-put of stuffmater in anastomsis of dacryocystorhinostomy, stuffmater is vaseline gauze.

• 方法随机抽取泪囊鼻腔吻合术分置填充物组与不置填充物组各200例(各200眼),前者填充物为凡士林纱条,后者不置任何物质。