十年来用改良法共做手术130例。年龄最大74岁,最小8岁。术中使用乳突枪状咬骨钳作成1.0×1.0cm 方形骨孔,将鼻粘膜与泪囊壁分别作成向前转的舌状瓣,缝合两针。作骨孔时有少数患者骨孔扩大后仍不见鼻粘膜时,此乃向前突的筛泡,可按孔骨的方向,选一薄弱部位再捅破,便可进入鼻 In the past ten years, a total of 130 cases underwent surgery with modified method. The oldest 74 years old, the youngest 8 years old. Intraoperative mastoid use of lancet-like rongeur made of 1.0 × 1.0cm square bone hole, the nasal mucosa and dacryocystis wall were made into the forward flap, sutured two needles. For a small number of patients with bone fractures when the bone is still enlarged nasal mucosa, this is the sudden protrusion of the bubble, according to the direction of the hole, select a weak site and then pierce, you can enter the nose