目的分析各期圆锥角膜后表面的形态特点，为完善圆锥角膜形态特点的描述提供参考。
Our present study was to investigate the corneal posterior surface topography in different clinical stages of keratoconus.
高度近视组角膜后表面屈光力与角膜后表面隆起度改变量大于中低度近视组的改变量（P<0.05）。
The changes of posterior corneal power and posterior surface elevation in high myopia were significantly more than those of mild-moderate myopia after LASIK ( P< 0. 05 ).
目的：研究激光角膜原位磨镶术(LASIK)前后，角膜后表面屈光度及曲率半径的改变以及影响因素。
Objective: to investigate the changes in the posterior corneal surface topography after LASIK and the factors that influence the results.
目的探讨准分子激光屈光性角膜切削术（PRK）后角膜表面形态和屈光力变化。
ObjectiveTo investigate the change in corneal surface shapes and refractive powers after photorefractive keratectomy(PRK).
在诊断早期圆锥角膜中，后表面屈光度最大值、后表面高度最大值的ROC曲线下面积最大。
The area under ROC of posterior maximum refractive power and the AUR of posterior maximum elevation were greater than that of other indices in the diagnosis of early keratoconus.
在诊断早期圆锥角膜中，后表面屈光度最大值、后表面高度最大值的ROC曲线下面积最大。
The area under ROC of posterior maximum refractive power and the AUR of posterior maximum elevation were greater than that of other indices in the diagnosis of early keratoconus.
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