近视患者LASIK术后术眼球差的变化

摘要

Objective To observe spherical aberration changes at the 6 mm pupil sizes after performing LASIK with wavefront-guided ablation and conventional ablation in myopia. Methods 71 eyes of 36 myopic subjects were selected as trial group,which underwent wavefront-guided LASIK, and another 71 eyes of 36 myopic subjects were selected as control group,which underwent conventional LASIK. The spherical aberration exaninations before operation and at 1, 3 month after operation were performed by the Zywave aberrometer. Results The root mean square(RMS) of spherical aberration before operation and at 1-month and 3-month after operation at trial group wereO. 13 ±0.11,0.30 ±0.05 and 0.32 ±0.01, while at control group were 0. 14 ±0. 12,0. 38 ±0.09 and 0.41 ±0.01, The RMS of spherical aberration preoperative between trial group and control group show no statistical significance(P >0.05), but the RMS of spherical aberration before and after operation in each group and 1-month and 3-month postoperative between trial group and control group show statistical significance(P<0.05). Conclusions Spherical aberration keep on rise after LASIK, and the wavefront-guided LASIK has more advantage in correcting spherical aberration than conventional LASIK.%目的 观察波前像差引导的准分子激光原位角膜磨镶术(LASIK)和常规LASIK治疗近视后术眼6 mm瞳孔直径下球差的变化情况.方法 行波前像差引导LASIK手术的近视患者36例(71眼,试验组),行常规LASIK手术的近视患者36例(71眼,对照组),术前及术后1、3个月用Zywave波前像差仪测量6mm瞳孔直径下术眼的球差.结果 术前及术后1、3个月球差均方根值(RMS)试验组分别为0.13±0.11、0.30±0.05、0.32±0.01,对照组分别为0.14±0.12、0.38 ±0.09、0.41±0.01,两组术前比较P＞0.05,各组手术前后比较、两组术后比较P＜0.05.结论 LASIK术后术眼球差持续上升,波前像差引导的LASIK比常规LASIK在减少球差上升方面更有优势.