Marchese Linda E, Munger Rejean, Priest David
The University of Ottawa Eye Institute, 501 Smyth Road, Ottawa, Ontario K1L 8L6 Canada.
J Opt Soc Am A Opt Image Sci Vis. 2005 Aug;22(8):1471-81. doi: 10.1364/josaa.22.001471.
Wavefront-guided laser eye surgery has been recently introduced and holds the promise of correcting not only defocus and astigmatism in patients but also higher-order aberrations. Research is just beginning on the implementation of wavefront-guided methods in optical solutions, such as phase-plate-based spectacles, as alternatives to surgery. We investigate the theoretical differences between the implementation of wavefront-guided surgical and phase plate corrections. The residual aberrations of 43 model eyes are calculated after simulated refractive surgery and also after a phase plate is placed in front of the untreated eye. In each case, the current wavefront-guided paradigm that applies a direct map of the ocular aberrations to the correction zone is used. The simulation results demonstrate that an ablation map that is a Zernike fit of a direct transform of the ocular wavefront phase error is not as efficient in correcting refractive errors of sphere, cylinder, spherical aberration, and coma as when the same Zernike coefficients are applied to a phase plate, with statistically significant improvements from 2% to 6%.
波前引导的激光眼科手术最近已被引入，有望不仅矫正患者的散焦和散光，还能矫正高阶像差。关于在光学解决方案（如基于相位板的眼镜）中实施波前引导方法作为手术替代方案的研究才刚刚开始。我们研究了波前引导手术矫正和相位板矫正实施中的理论差异。在模拟屈光手术后以及在未治疗的眼睛前放置相位板后，计算了43个模型眼的残余像差。在每种情况下，都使用了当前将眼像差的直接映射应用于矫正区域的波前引导范式。模拟结果表明，当将相同的泽尼克系数应用于相位板时，作为眼波前相位误差直接变换的泽尼克拟合的消融图在矫正球镜、柱镜、球差和彗差的屈光不正方面不如前者有效，统计学上有显著改善，改善幅度从2%到6%。
