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.；本文介绍了圆台压平棱镜的设计方法；给出了测量压平面积的实验装置和测量结果