探针球内异物定位法,因其操作简单易掌握,已为眼科界所肯定,将X线摄片上取得的数据,如何精确地应用到眼球上,尚未见专门文献论述,故此,特将本法定位要点及其换算原理作一介绍。一、定位要点:X光机球管中心和伤眼角膜顶点连线应与机器台板垂直,胶片放在台板下正对伤眼,摄片时双眼睁开,停止瞬目,使眼固视正前方。摄正位片:病人取仰卧 Probe ball foreign body positioning method, because of its simple and easy to grasp, has been recognized by the ophthalmic community, the data obtained on X-ray film, how to accurately applied to the eye, has not yet seen the specialized literature, therefore, especially this Law positioning key points and the conversion principle for an introduction. First, the positioning points: X-ray tube center and the injured corneal vertex connection should be perpendicular to the machine platen, the film on the plaque is against the injured eye, the eyes open when the film, stop blink, so that the eye solid As the front. Photo positive film: the patient supine