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    • 3. 发明授权
    • Method for determining control information for photorefractive corneal surgery and method for providing correction information required therefor
    • 用于确定光折射角膜手术的控制信息的方法及其所需的校正信息的方法
    • US08282629B2
    • 2012-10-09
    • US12063754
    • 2006-08-18
    • Michael MrochenMichael Bueler
    • Michael MrochenMichael Bueler
    • A61B18/18
    • A61F9/008A61F9/00804A61F2009/00848A61F2009/00872
    • A method for determining control information for controlling laser radiation irradiated onto the cornea of an eye to be treated photorefractively comprises correcting a corneal ablation profile, obtained by measuring optical properties of the eye, with the aid of correction information, the control information being formed on the basis of the corrected ablation profile thus produced. According to the invention, the correction of the ablation profile is performed in the spatial frequency domain. To this end, the ablation profile is transformed into a spatial frequency spectrum. Corrected amplitude or/and phase values are then determined for various discrete spectral components of the ablation profile on the basis of stored amplitude or/and phase correction information. Subsequently, the spatial frequency spectrum with the amplitude or/and phase corrected spectral components is backtransformed into the geometric spatial domain. The result is the corrected ablation profile. The amplitude and phase correction information in this case respectively represent for a number of spatial frequencies differing at least by the frequency value a predetermined relationship between values of the amplitude or/and phase at the relevant spatial frequency and corrected amplitude or/and phase values at this spatial frequency.
    • 一种用于确定用于控制照射到待处理的眼睛的角膜上的激光辐射的控制信息的方法,其特征在于,包括:通过校正信息校正通过测量眼睛的光学特性所获得的角膜消融轮廓,所述控制信息形成于 由此产生的校正消融轮廓的基础。 根据本发明,在空间频域中执行消融轮廓的校正。 为此,将消融轮廓变换为空间频谱。 然后基于存储的幅度或/和相位校正信息,确定消融轮廓的各种离散频谱分量的校正幅度或/和相位值。 随后,具有振幅或/和相位校正的光谱分量的空间频谱被逆转换为几何空间域。 结果是校正的消融轮廓。 在这种情况下,幅度和相位校正信息分别表示对于空间频率的数量至少不同的频率值,相关空间频率处的振幅或/和相位的值之间的预定关系以及校正的幅度或/和相位值 这个空间频率。