A model for calculating ablation profile to precompensate for spherical aberration and the higher order astigmatism is presented.
研究了补偿球差和高阶散光的像差与角膜切削量的关系，即补偿球差和高阶散光的角膜切削模型。
Results: Total higher order aberrations, spherical aberration, horizontal primary coma, and vertical primary coma, were increased significantly with increasing pupil size.
结果：总高阶相差、水平彗差、垂直彗差和球差均随瞳孔直径的增大而增大；
Conclusion Wavefront aberration-guided LASIK surgery can significantly reduce the increase in higher-order aberrations in order to improve visual quality.
结论波前像差引导的LASIK能显著降低术后高阶像差的增幅，从而改善视觉质量。
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