0　引言　屈光不正是眼科最常见的疾病 ,验光又是最基本的屈光检查和矫正屈光不正的前提 .我们自 1993年以来对传统的检影验光方法及设备进行了一些改进 [1 ] .经反复尝试 ,重新设出一种运用超声测距及计算机技术替代换片的简单便捷的超声测距检影验光仪 .门诊使用两年 ,性能参 0 Introduction Refractive error is the most common ophthalmological diseases, optometry is the most basic premise of refractive examination and correction of refractive errors.We since 1993 on the traditional retinoscopy methods and equipment made some improvements [1] After repeated attempts to reset the use of ultrasonic distance measurement and computer technology to replace a simple and convenient ultrasonic distance retinoscopy retinoscopy. Outpatient use of two years, the performance parameters