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角膜异物以磁性金属异物(铁屑)为最多,约占角膜异物的86.29%。浅表异物,较易剔除,角膜深层异物,尤其是嵌插深达后弹力层,或部分已进入前房的异物,摘取时常感较为困难。作者在手术显微镜或裂隙灯下采用磁化摘取法,摘出这种磁性异物获得成功,现介绍如下: 方法:消毒麻醉。同常规置入开睑器,充分暴露出创面,把手术显微镜或裂隙灯调至最清晰位置,观察清楚异物嵌插的部位及其深度。角膜异物针用电磁铁反复间断通电感应磁化3～4次,使其具有一定的
Corneal foreign body to magnetic metal foreign body (iron filings) for the most, accounting for 86.29% of corneal foreign bodies. Superficial foreign body, easy to remove, deep corneal foreign body, especially after the insertion of deep elastic layer, or part of the foreign body into the anterior chamber, often feel more difficult to extract. The author under the operating microscope or slit lamp using magnetization extraction method, the successful removal of this magnetic foreign body, are described below: Method: disinfection anesthesia. With the regular open speculum, fully exposed the wound, the operating microscope or slit lamp adjusted to the clearest position, observe the location and depth of foreign body inlay. Corneal foreign body needle repeatedly electromagnet intermittent induction magnetization 3 to 4 times, it has a certain