astigmatism and coma 像散与彗差
Meanwhile, astigmatism aberration, coma aberration and trefoil aberration are three main effects that influence the quality of the optics.
对光学成像产生影响的主要成分是散光像差、彗差和三叶草像差。
Maintaining smaller vertical primary coma and correcting spherical aberration completely for myopia and myopic astigmatism may be the best choice for customized cornea laser ablation surgery.
对欲行个体化角膜切削的近视及近视散光患者，保留较小的垂直彗差而完全矫正球差可能有助于视觉质量的提高。
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