| 基于复曲面的准分子激光屈光矫正计算模型 |
| |
| 引用本文： | 沈建新,张运海,廖文和.基于复曲面的准分子激光屈光矫正计算模型[J].东南大学学报(自然科学版),2006,36(4):531-536. |
| |
| 作者姓名： | 沈建新 张运海 廖文和 |
| |
| 作者单位： | 南京航空航天大学机电学院,南京,210016;南京航空航天大学机电学院,南京,210016;南京航空航天大学机电学院,南京,210016 |
| |
| 基金项目： | 江苏省六大人才高峰基金，江苏省科技成果重点推广计划 |
| |
| 摘 要： | 为了建立准分子激光屈光矫正计算模型来引导准分子激光屈光手术,根据角膜非球面的生理特征,将手术前角膜表面假设成在2个主径线上具有不同曲率半径的复曲面,在理论上建立屈光不正和角膜切削量的关系,按照规则散光的5种不同分类(研究复性近视散光、复性远视散光、单纯近视散光、单纯远视散光、混合散光的准分子激光切削数学模型)来计算准分子激光矫正屈光不正时角膜的切削量,达到矫正人眼规则散光的目的,经临床应用取得了良好效果.
|
| 关 键 词： | 数学模型 角膜 复曲面 屈光不正 准分子激光 角膜屈光手术 规则散光 |
| 文章编号： | 1001-0505（2006）04-0531-06 |
| 收稿时间： | 11 21 2005 12:00AM |
| 修稿时间： | 2005-11-21 |
Mathematical model based corneal toric surface for excimer laser refractive surgery |
| |
| Shen Jianxin,Zhang Yunhai,Liao Wenhe.Mathematical model based corneal toric surface for excimer laser refractive surgery[J].Journal of Southeast University(Natural Science Edition),2006,36(4):531-536. |
| |
| Authors: | Shen Jianxin Zhang Yunhai Liao Wenhe |
| |
| Institution: | College of Mechanical and Eleclrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
| |
| Abstract: | The purpose of this research is to establish a mathematical model to determine corneal shape and apply that technique to excimer laser refractive surgery. Seeing that the corneal physiological surface is aspheric, the preoperative corneal shape can be approximated by toric surface with radii of curvature Rix, Riy. The relationship between refraction error and corneal ablation depth was deduced in theory. Various mathematical models which can be used for compound myopia astigmatism, compound hypermetropia astigmatism, simple myopia astigmatism, simple hypermetropia astigmatism, mixed astigmatism have been proposed. Clinic practice shows that the technique proposed can correct regular astigmatism and achieve satisfied results. |
| |
| Keywords: | mathematical model corneal toric surface refractive error excimer laser refractive surgery regular astigmatism |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
