... 数字显示式焦度计 digitally rounding focimeter 顶焦度 vertex power 后顶焦度 back vertex power ...
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back vertex power 后顶点屈光度 ; 反向瞬态过程
Determination of back vertex power 后屈光度的测定
front vertex power 前顶点焦距
vertex dioptric power 镜顶屈光度
Objective: To analyze the aberration properties of contact lens and its central back vertex power measurement.
目的：探讨接触镜的球差特征以及后顶焦距测量的实质。
Objective:To confirm that the lensometer adjusted by the special lenses group for contact lenses can't express the back vertex power of contact lenses.
目的：证实采用接触镜专用标准透镜组标定的焦度计不能准确测定被测角膜接触镜的顶焦度。
This paper describes the error in focimeters, the principle of selection on curvature of inside face for vertex power of standard lenses and the method for measuring them.
本文叙述了焦度计的误差，顶焦度标准镜片内表面弯度的选择原则，以及标准镜片的测量方法等。
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