Montés-Micó Robert, Muñoz Gonzalo, Albarrán-Diego César, Rodríguez-Galietero Antonio, Alió Jorge L
Refractive Surgery Unit, NISA Hospital Virgen del Consuelo, Valencia, Spain.
J Cataract Refract Surg. 2004 Jul;30(7):1418-24. doi: 10.1016/j.jcrs.2003.11.057.
To evaluate the optical aberrations in the cornea before and after astigmatic keratotomy (AK) combined with laser in situ keratomileusis (LASIK) in a group of patients with high myopic astigmatism.
Refractive Surgery Unit, NISA Hospital Virgen del Consuelo, Valencia, Spain.
Twelve patients (24 eyes) with high myopic astigmatism (from 3.50 to 6.00 diopters) participated in the study. Astigmatic keratotomy was performed as the first step to reduce astigmatism; after 2 months, the residual refractive error was corrected with LASIK. Videokeratography measurements were conducted before and after each procedure. Topography maps were used to calculate the wavefront corneal aberrations for a 6.0 mm pupil diameter.
Total, coma-like, and spherical-like aberrations increased significantly from preoperatively to post LASIK (x6.34, x2.52, and x10.50, respectively; P<.01). Astigmatic keratotomy significantly increased coma-like (x4.04; P<.01) and spherical-like (x5.66; P<.01) aberrations. After LASIK, the coma-like aberration was significantly reduced (x0.62; P =.008) and the spherical-like aberration was significantly increased (x1.86; P<.01).
Astigmatic keratotomy increased higher-order corneal aberrations, both coma-like and spherical-like, whereas LASIK performed after AK increased the spherical-like aberration and reduced the coma-like aberration.
评估一组高度近视散光患者在散光性角膜切开术（AK）联合准分子原位角膜磨镶术（LASIK）前后角膜的光学像差。
西班牙巴伦西亚NISA医院圣母康苏埃洛分院屈光手术科。
12例（24只眼）高度近视散光患者（散光度数为3.50至6.00屈光度）参与本研究。散光性角膜切开术作为第一步用于降低散光；2个月后，用LASIK矫正残余屈光不正。在每次手术前后进行角膜地形图测量。使用地形图计算6.0毫米瞳孔直径下的角膜波前像差。
从术前到LASIK术后，总像差、类彗差和类球差显著增加（分别为x6.34、x2.52和x10.50；P<.01）。散光性角膜切开术显著增加了类彗差（x4.04；P<.01）和类球差（x5.66；P<.01）。LASIK术后，类彗差显著降低（x0.62；P =.008），类球差显著增加（x1.86；P<.01）。
散光性角膜切开术增加了高阶角膜像差，包括类彗差和类球差，而在AK术后进行的LASIK增加了类球差并降低了类彗差。
