【摘要】 目的观察应用虹膜跟踪技术在波前像差引导的个体化LASIK治疗近视的疗效。设计回顾性病例系列。研究对象接受虹膜跟踪技术和波前像差引导的个体化LASIK治疗的近视患者共39例(74眼)。方法按术前等值球镜度数将患者分为低度近视组(Ⅰ组,8眼)、中度近视组(Ⅱ组,21眼)、高度近视组(Ⅲ组,23眼)和超高度近视组(Ⅳ组,22眼),将四组的检查结果进行分析。主要指标裸眼视力、最佳矫正视力(BSCVA)、高阶像差。结果术后四组患者裸眼视力、最佳矫正视力、预期屈光度矫正均取得满意效果。术后3个月时,最佳矫正视力达到或超过1.2者,Ⅰ组为87.5%;Ⅱ组为90.5%;Ⅲ组为73.9%;Ⅳ组为63.6%。达到超视力(2.0)者四组分别为25.0%、23.8%、8.7%和0.0%。其中有34.3%的眼术后BSCVA较术前提高1~3行,2眼术前BSCVA从1.2降到1.0,无视力丢失2行及以上者。术后达到超视力者11眼(占14.8%)。术后总高阶像差增加幅度较普通LASIK显著减小,尤以Ⅰ组和Ⅱ组显著。彗差矫正优于球差。结论Zyoptix虹膜跟踪技术及波前像差引导LASIK治疗近视及近视散光安全、有效。更多还原

【Abstract】 Objective To observe the clinical results of wavefront and iris recognizing guided LASIK for myopia and myopia astigmatism.Design Retrospective case series.Participants Thirty-nine patients(74 eyes) with myopia and myopia astigmatism.Methods The Hansatome microkeratome and Technolas 217 z excimer laser were used to correct myopia and myopia astigmatism on 74 eyes in 39 cases.The eyes were divided into four groups according to preoperative spherical equivalent.GroupⅠ:from-1.00D to-3.00D(mean-2.03±0.82D) in 8 eyes,treatment area diameter ranged from 6.3 to 7.0mm;groupⅡ:from-3.01D to6.00D(mean-4.65±0.83D) in 21 eyes,treatment zone from 5.4 to 6.5mm;groupⅢ:from6.01D to -9.00D(mean-7.79±0.72D) in 23 eyes,treatment area diameter ranged from 5.3mm to 6.3mm;groupⅣ:from-9.01D to-13.75D(mean-10.81±1.28D)in 22 eyes,treatment zone from 5.0 to 5.8mm.At the preoperative and 3-month postoperative spherical equivalent,best-corrected visual acuity,refractions and the higher order RMS were recorded and analyzed.Main Outcome Measures Uncorrected visual acuity,best-corrected visual acuity and high-order aberration.Results At the 3-month postoperative spherical equivalent,uncorrected visual acuity,best-corrected visual acuity and post-operation refraction were satisfactory.Postoperative uncorrected visual acuity was 1.2 or better in 87.5%% of patients of groupⅠ,in 90.5% of patients of groupⅡ,in 73.9% of patients of groupⅢ,in 63.6% of patients of groupⅣthan their preoperative best corrected visual acuity,respectively.In none of 74 eyes postoperative best-corrected visual acuity lost 2 lines or more of vision. Supernormal vision(UNVA of 2.0 or better) was achieved in 25.0% of groupⅠ,in 23.8% of group Ⅱ,in 8.7% of groupⅢand in 0.0% of groupⅣ.At 6mm pupil size,the higher order root-mean-square(RMS) was increased by 26%-252% postoperatively.Third-order aberration were found to be well corrected than Forth-order aberration.Conclusions Wavefront and iris recognizing guided LASIK is a promising technique that can improve visual acuity and increase the quality of vision.The results indicate that patients have better visual acuity and quality of vision after Zyoptix wavefront customized LASIK.更多还原