眼表对视觉光学的作用。

Contribution of the ocular surface to visual optics.

作者信息

Courville C B, Smolek M K, Klyce S D

机构信息

Lions Eye Research Laboratories, LSU Eye Center, Louisiana State University Health Sciences Center, New Orleans, LA 70112-2234, USA.

出版信息

Exp Eye Res. 2004 Mar;78(3):417-25. doi: 10.1016/j.exer.2003.10.012.

DOI:10.1016/j.exer.2003.10.012

PMID:15106921

Abstract

The air/tear interface contributes 70% of the vergence in the eye and, because of this, even minor variations in its shape can produce significant visual deficit. Placido disc-based corneal topographers measure the precise characteristics of the corneal surface, transforming shape into color-coded dioptric power maps and topography indexes related to optical quality and specific patterns associated with pathology. Artificial intelligence-based methods are used to classify corneal topography and these are used as screening tools. Coupling corneal topography measurements with aberrometry measurements permits the display of the internal aberrations of the eye. Together, these data provide the opportunity to extend refractive correction beyond sphere and cylinder to the higher order aberrations as well.

摘要

空气/泪液界面贡献了眼睛中70%的聚散度，因此，其形状的微小变化也会导致明显的视力缺陷。基于普拉西多盘的角膜地形图仪可测量角膜表面的精确特征，将形状转换为颜色编码的屈光力图以及与光学质量和病理相关特定模式的地形图指数。基于人工智能的方法用于对角膜地形图进行分类，并用作筛查工具。将角膜地形图测量与像差测量相结合，可以显示眼睛的内部像差。这些数据共同提供了将屈光矫正从球镜和柱镜扩展到高阶像差的机会。