关于RK手术中几个手术参量对屈光矫正效果影响的定量化计算研究  

A STUDY OF THE QUANTITATIVE COMPUTATION OF THE INFLUENCE OF OPERATIONAL PARAMETERS IN THE RK OPERATION

作　　者：王家权[1] 曾衍钩 蒋和洋[1] 李秀云[2] 齐莉[2] 

机构地区：[1]北京工业大学生物医学工程中心,100022 [2]北京友谊医院眼科

出　　处：《医用生物力学》1999年第4期193-197,共5页Journal of Medical Biomechanics

基　　金：国家自然科学基金!19672002

摘　　要：本文依据人眼屈光学的基本原理，分析推导了手术矫正近视效果的表达式和主要影响因素；并以已知的角膜生物力学性能和角膜的生理、力学结构为前提；以有限元法为工具；构造了中度近视角膜的几何模型和力学模型；定量计算并分析确定了在ＲＫ手术中的几个手术参量，如光区半径、切口数目、眼内压、切口深度等对手术的直接影响效果；为临床提供了一些有益的借鉴。In this study the expression and the main affecting factor of myopia correction effect were deducedand analyzed according to the refraction fundamentals. On the basis of the known biomechanicalproperty and mechanical structure of the cornea, by means of the finite element method,computerized geometric models and biomechanical models of moderate myopic cornea for thesimulation of the refractive surgery were established. Some operational parameters, such asintraocular pressure, optical zone radius, cut number, incision depth in the RK operation wereanalyzed, and their influence on the operational outcome was computed and systematicallyanalyzed. Some valuable references are provided for the clinical practive.

关 键 词：有限元 生物力学 屈光矫正 近视 RK 

分 类 号：R778.11[医药卫生—眼科] R318.01[医药卫生—临床医学]