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在角膜接触镜的配镜过程中,测定角膜的前曲率半径是至为重要的,其目的是为了使角膜接触镜的后表面与角膜的前表面良好贴合,若有散光,还可查知是角膜散光还是晶体散光。测定角膜的曲率半径通常用角膜计。笔者用测量角膜直径,换算求出角膜曲率半径的方法,配镜结果满意,现介绍如下:原理与方法1.原理:Verste(1976)发现,角膜接触镜后表面曲率半径与镜片的直径有一个相应的关系,即镜片直径加大0.5mm,其曲率半径加大0.2mm,加大率为0.2/0.5=
In the contact lens ophthalmoscopy, the determination of the corneal curvature of the front is of paramount importance, the purpose is to make the corneal contact lens posterior surface of the cornea and the front surface of good fit, if there is astigmatism, but also can be found Corneal astigmatism or astigmatism. The corneal curvature radius is usually measured with a cornea. I used to measure the corneal diameter, the conversion method of corneal radius of curvature, satisfactory results with glasses, are as follows: Principles and methods 1. Principle: Verste (1976) found that the radius of curvature of the contact lens surface and the lens diameter of a The corresponding relationship, that is, the lens diameter increased 0.5mm, the radius of curvature increased 0.2mm, increase the rate of 0.2 / 0.5 =