在眼内异物摘出手术中,其中定位的准确性是手术成败的关键。目前国内外对眼内异物定位方法很多,有检眼镜,磁线,超声波,电磁等定位法。但很难作到完全准确。因此,在上述定位方法基础上,又产生了多种辅助和综合定位方法,来设法校正误差,如方格定位,黑点试验,透热电凝定位,巩膜顶压定位,巩膜透照,巩膜切开跳动试验,利用电子计算机,三角函数法计算校正;还有内窥 In the intraocular foreign body removal surgery, the accuracy of which is the key to the success of surgery. At present, there are many methods to locate intraocular foreign body at home and abroad, such as ophthalmoscope, magnet wire, ultrasonic, electromagnetism and so on. But it is hard to be completely accurate. Therefore, based on the above positioning method, a variety of auxiliary and integrated positioning methods have also been developed to try to correct errors such as grid positioning, black spot test, diathermy, scleral topography, scleral shining, sclera resection Open bouncing test, the use of electronic computers, trigonometry calculation of correction; there are endoscopy