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目的 介绍一种双目间接检眼镜的简捷用法,在视网膜脱离手术中,借助顶压可以直接观察到一个直立的正像。方法在手术中借助顶压不用间接镜头,直接用目镜观察眼底,目镜距角膜的距离平均7±1.2cm,并将此用法与双目间接检眼镜的正规用法比较。结果 此方法放大倍数高、识别力强、无倒像、有立体感,术中借助顶压,能发现视网膜皱折间的小裂孔,明显提高了裂孔的检出率(提高9％)。不但使检查和冷凝操作更为简捷方便,而且由于固定与移动较好的结合,加强了视网膜检查的连续性。但在屈光间质不清时,光穿透性较差、视野较小。结论 这种简捷用法放大倍数高、识别力强、无到像、有立体感、操作顺手。但仍有缺陷。
Objective To introduce a simple and direct use of binocular indirect ophthalmoscope, retinal detachment surgery, with the top pressure can be directly observed an upright positive. Methods With the aid of top pressure, the fundus was observed directly with eyepieces. The distance from the eyepiece to the cornea was 7 ± 1.2 cm on average. This method was compared with the regular use of indirect ophthalmoscope. Results This method has the advantages of high magnification, strong recognition, no inverted image, and three-dimensional impression. The intraoperative pressure of the top of the retina can be used to find the small cracks in the retina fold, which obviously improves the detection rate of the cracked holes by 9%. Not only to check and condensate operation is more simple and convenient, but also because of the combination of fixed and mobile better enhance the continuity of retinal examination. However, when interstitial refractive error, poor light penetration, smaller field of vision. Conclusion This simple and convenient use of high magnification, strong recognition, no to the like, a three-dimensional, smooth operation. But still flawed.