一种简单实用的眼睛屈光不正的模拟与矫正的实验方法

利用物距、像距法测量薄透镜的焦度是几何光学中最常用的方法.本实验利用透镜A来模拟了眼睛的折光系统,像屏模拟了视网模,透镜B、C分别模拟了矫正眼睛屈光不正的近视镜和远视镜,屈光不正的原因很多[8,9],本文仅以眼球前后距离的变化(视网膜的移动[9]靠像屏的移动来实现)来模拟了眼睛的屈光不正及矫正的方法,并比较准确地测定了薄透镜的焦距(光焦度).本文是在"非正常眼的模拟与矫正的实验方法研究"的基础上又进行了改进.

An Easy and Practical Experimental Method for Simulation and Correction of Abnormally Dioptric Eyes

Measuring the focal lengths of thin lens by means of object distance and image distance is a commonly utilized method in geometric optics. In this experiment, to simulate the dioptric system of eyes and the retina, Len A and an image screen were exploited, respectively; Lens B and C were employed to simulate the myopic and hyperopic spectacles to correct the abnormally dioptric eyes, respectively. There are many causes for abnormally dioptric eyes. So, the discussion of the method for correcting abnormally dioptric eyes in this article is constrained in changes in the anterior-posterior distances of eyes (moving the retina-image screen). The focal lengths of the thin lens were measured accurately to some extent.