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
控制视力检测仪,其由单
、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

现视标"E"朝向的正确与否来检测视力。


称作肾乳头,则
视百科科技类
:
有效沟通
午话传统


