1.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.
方法:采用微计算机力检测仪,其由单片机、手柄和液晶显示屏构成,手柄具有上下左
方向等功能键,根据手柄上的按键选取随机出现
标"E"朝向的正
来检测
力。