方法：对近视学生采用散瞳验光和电脑验光及测定患者的角膜曲率和用a超测定眼轴长度而进行分析。
Methods: Analysis was done with mydriatic and computer optometry to measure corneal curvature and determine the length of the optic axis.
主要指标近视度数、角膜曲率、眼轴长度及角膜中央厚度。
Main Outcome Measure Diopter of myopia, cornea curvature, axis length of eye and central cornea thickness.
初步确定了花键轴的断裂是疲劳断裂，裂纹源在花键齿根底部过渡圆角曲率半径最小的表面部位。
We have made certain that the reason of the splined spindle rapture is fatigue failure, its crack initiation lies in the minimal knuckle curvature radius surface region of the spline dedendum bottom.
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