论文部分内容阅读
目的观察屈光不正儿童睫状肌麻痹前后角膜地形图两条主子午线角膜曲率Kf及Ks、角膜散光及轴向、SRI及sAI的变化。方法采用TNs-4型计算机辅助角膜地形图仪,对53例106眼屈光不正儿童(远视50眼,近视56眼)分别于其睫状肌麻痹前、后进行角膜地形图检查。采用两样本均数比较的配对t检验对睫状肌麻痹前后角膜地形图的两正交子午线角膜屈光力最大值Ks、角膜屈光力最小值Kf、角膜散光值、散光轴向、角膜表面、规则指数(SRl)、角膜表面非对称指数(SAl)进行统计分析。结果睫状肌麻痹前后Ks、Kf、角膜散光值、散光轴向、SRI、SAI的比较均无显著性差异(P>0.05)。结论儿童睫状肌麻痹后角膜屈光力、散光轴向、SRI、SAI均无变化,
Objective To observe the changes of corneal curvature Kf and Ks, corneal astigmatism and axial, SRI and sAI of two principal meridian corneal topographs before and after cycloplegia in children with refractive errors. Methods TNs-4 computer-assisted corneal topography was used to examine corneal topography in 53 cases of 106 children with ametropia (50 hyperopia and 56 eyes of myopia) before and after their ciliary muscle paralysis. Paired t test was used to compare the mean corneal topography Ks, corneal minimum Kf, corneal astigmatism, axial astigmatism, corneal surface, regular index SRl), corneal surface asymmetry index (SAl) for statistical analysis. Results There was no significant difference in Ks, Kf, corneal astigmatism, axial astigmatism, SRI and SAI before and after cycloplegia (P> 0.05). Conclusion There is no change in corneal refractive power, axial astigmatism, SRI and SAI in children after cycloplegia,