屈光状态，即球镜度数、柱镜度数、等效球镜三组差异无统计学意义；
No statistic difference was found in refractive status, i. e. spherical, cylindrical and spherical equivalent degree among three groups;
屈光状态，即球镜度数、柱镜度数、等效球镜三组差异无统计学意义；
No statistic difference was found in refractive status, i. e. spherical, cylindrical and spherical equivalent degree among three groups;
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