摘要目的 比较虹膜定位和Kappa角校正飞秒LASIK术的临床疗效.方法 前瞻性的随机病例对照研究.两组术后1个月视力、CSF分别和术前最佳矫正视力、最佳矫正视力戴镜测量CSF进行配对t检验.两组之间术后1个月CSF较术前最佳矫正视力戴镜测量CSF提高值进行两独立样本Mann-Whitney U非参数检验;两组之间术后1个月视力较术前最佳矫正视力提高值和Oculus Pentacam 眼前节分析系统测量的偏中心切削值进行两独立样本t检验.两组术后1个月视力、CSF较术前提高值与偏中心切削值、术后残余球镜度数、柱镜度数和散光轴位进行Pearson法相关性分析.结果 两组术后1个月视力、CSF和术前最佳矫正视力、最佳矫正视力戴镜测量CSF差异有统计学意义.两组之间术后1个月视力、CSF较术前提高值和偏中心切削值差异无统计学意义.结论 两种手术方式均能有效避免偏中心切削,获得优于术前的视力和CSF.两种手术方式术后视力、CSF提高值和偏中心切削情况无差异.

abstractsObjective To compare the clinical curative effect of iris localization and Kappa Angle correction on femtosecond LASIK surgery.Methods Prospective randomized controlled study.Matching t test was used on two groups of postoperative 1 month visual acuity,contrast sensitivity respectively and preoperative best corrected visual acuity,best corrected vision wear glasses measuring contrast sensitivity.Two independent sample t test and nonparametric test were used on between the two groups of postoperative 1 month visual acuity,contrast sensitivity compared with preoperative best corrected visual acuity,best corrected vision wear glasses contrast sensitivity increased value and Pentacam measurement of cutting off center value pairs.Two groups of postoperative 1 month visual acuity,contrast sensitivity increased value with Pentacam measurement of cutting off center value,postoperative residual spherical mirror,1 enticular mirror and cylindrical mirror axis for correlation analysis.Results Two groups of postoperative 1 month visual acuity,contrast sensitivity and preoperative best corrected visual acuity,best corrected vision wear glasses measuring contrastsensitivity difference was statistically significant.Between the two groups of postoperative 1 month visual acuity,contrast sensitivity and Pentacam measurement of cutting off center value differences had no statistical significance.Conclusions The two kinds of operation method can effectively avoid cutting off center of LASIK,get better than that of preoperative vision and contrast sensitivity.Two kinds of operation method postoperative visual acuity,contrast sensitivity increase value and cutting off center has no difference.