Methods The optometer is composed of singlechip, handle and LCD.The eyesight is examined by selecting exposure of random sample eye-chart mark E within direction keys on the handle.
采用微计算机控制视力检测仪，其由单片机、手柄和液晶显示屏构成，手柄具有
右
向
键，根据手柄的按键选取随机出现视标"E"朝向的正确与否来检测视力。
例句、词性分类均由互联网资源自动生成，部分未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
