METHODS Bony lacrimal passageswere wholly opened in lateral rhinotomy,so as toexpose lacrimal sac and lacrimonasal duct sufficiently.

• 方法鼻侧切开术中将骨性泪道全程开放,充分暴露泪囊和鼻泪管,良性病变应尽量保留膜性泪道;