儿童与中青年近视眼角膜地形图的比较

目的：研究儿童与中青年近视眼的角膜地形图特征并进行比较，方法：分别测量100例200眼儿童近视眼及101例202眼中青年近视眼的角膜地形图，并进行检影验光，记录近视，散光度数及散光轴位，将所得结果进行统计分析。结果：中青年组近视度数较儿童组明显加深，SimK1,SRI,SAI增大，SimK2及MinK无明显差异。2组角膜中央图形形态相似，大多为蝴蝶结形，椭圆形次之，圆形及不规则形较少，2组角膜在多表现为顺规散光，但中青年组斜向散光及逆规散光较儿童组增多，结论：从儿童到中青年，随着年龄的增加，近视度数加深，角膜表现不规则，不对称性增大，并且散光轴位有向垂直方向发展的趋势。

Comparison of corneal topography in children and youth-middle aged myopic patients

Objective To investigate and analyze the characteristics of corneal topography in children and youth middle aged myopic patients.Methods Corneal topography and objective refraction were performed on 100 children with myopic patients (200 eyes) and 101 patients with youth middle aged myopic (202 eyes), and myopic degree, astigmatism and its axis were recorded and analyzed.Results In youth middle aged myopic patients groups, myopic degree increased significantly, SimK1?SRI?SAI increased,SimK2 and MinK didn't show significant difference from children groups.Corneal topography were similar between two groups, and showed bowtie pattern mostly, oval pattern secondly, round and irregular pattern less in all pattern.Astigmatism with the rule was most in two groups, but oblique astigmatism and astigmatism against the rule increased more in youth middle aged myopic patients groups than in children groups. Conclusion Corneal surface irregularity and asymmetry increased, and the axis of astigmatism have the tendency to develop to vertical meridian with age increasing and myopia deepening from children to youth middle aged person.