计算机辅助的角膜地形图分析系统的初步研制及临床应用

Study on the Manufacture and Clinical Application of Computer-assisted Corneal Topographic analysis System

在国内首次为建立具有自身特点的计算机辅助的角膜地形图分析系统进行初步方法学上的探讨。该分析系统对所采集的角膜前表面光栅映像直接分析处理,计算出角膜前表面若干个点的曲率半径和屈光度。先用标准钢球检测本分析系统的准确度,发现其精确度较高。临床应用在正视、近视、白内障及RK手术前、后有代表性病例验证时,该系统能较准确地反映角膜前表面水平子午线上的曲率半径、屈光度分布及其细微变化。

We studied on the methodology of the self-characteristically designed computerassisted corneal topographic analysis system first in our country. It might analyse the images Which were caught from the anterior surface of the cornea directly and calculate the radial curvature and refraction of the points on the anterior corneal surface. The precision of this machine is high and error is minimal when checked out by two different standard steel balls. It could demonstrate the refraction and the radial curvature of the horizontal meridian of the anterior corneal surface accurately and sensatively when tested clinically in normal person, myopes and patients who were performed with radial keratotomy or cataract extraction.