Using Chauvenet method abnormal data of 523 eyes were analyzed for building model.We analyzed data under four different signiticant, levels (0.25,0.1,0.05 and 0.01) and got two kinds of results.

• 用C语言编程对数据进行计算，分析各因素、各因素平方项及各因素间交互作用对角膜屈光改变值的影响，分别在显著性水平为0.；25、0