The linear measurement principle of flattened diameter of the ocular cornea and the location deviation of the cone prism which is used in the applanation tonometer are introduced.
介绍了用于压平眼压计的圆台压平棱镜进行角膜压平直径线性测量原理及定位偏差分析；
Based the principle of total reflection, the unique cone applanation prism is designed, by which the applanation area of ocular cornea can be measured linearly.
利用全反射原理，设计了特殊的圆台压平棱镜探头，可线性测量角膜的压平面积。
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