实时虹膜识别在波前引导LASIK术中的应用价值  

The practical value of first time iris recognition in wavefront aberration guided LASIK

作　　者：揭黎明[1] 郑林[1] 王骞[1] 

机构地区：[1]厦门大学附属厦门眼科中心,361001

出　　处：《中华眼视光学与视觉科学杂志》2013年第1期30-33,共4页Chinese Journal Of Optometry Ophthalmology And Visual Science

摘　　要：目的评价实时虹膜识别技术在波前像差引导准分子激光原位角膜磨镶术（LASIK）中的价值。方法随机对照研究。接受实时虹膜识别联合波前引导IJASIK手术的近视患者50例（100眼）作为虹膜识别组，接受常规波前引导IASIK手术的近视患者51例（102眼）作为对照组，对两组患者术后1、3、6个月的裸眼视力、屈光度、高阶像差、对比敏感度等进行比较。采用配对t检验、成组t检验、方差分析和卡方检验。结果术后6个月时，虹膜识别组最佳矫正视力提高1行以上的患者（62眼，62．0％）多于对照组（48眼，47．1％），差异有统计学意义（x2=4．99，P〈0．05）；虹膜识别组的平均散光（-0．19±0．24）D低于对照组（-0．30±0．36）D，差异有统计学意义（t=2．49，P〈0．05）。术后6个月，当瞳孔直径为6mm时，虹膜识别组彗差、三叶草像差均方根值均小于对照组，差异均有统计学意义（t=2．22、3．31，P〈0．05）。术后6个月对照组对比敏感度恢复到术前水平，而虹膜识别组略优于术前。结论实时虹膜识别技术能够提高波前像差引导LASIK手术的视觉质量。Objective To evaluate the practical value of first-time iris recognition in wavefront aberration-guided laser in situ keratomileusis （LASIK）. Methods In a randomized contrast study, 101 patients （202 eyes） with myopia were randomly divided into 2 groups： the iris recognition group （50 cases, 100 eyes） that agreed to undergo first-time iris recognition combined with wavefront-guided LASIK, and the non-iris recognition group （51 cases, 102 eyes） that agreed to undergo conventional wavefront aberration-guided LASIK. Uncorrected visual acuity, refractive error, higher order aberrations and contrast sensitivity were compared between the two groups at 1 month, 3 months and 6 months postoperatively. The data were analyzed by SPSS 17.0 statistical software, a t test for the measurement data, and a chi-square test for the enumeration data. Results Six months after the operation, the number of patients who gained more than 1 line of best spectacle-corrected visual acuity （BSCVA） in the iris recognition group （62 eyes, 62.0%） was significantly more than that of the non-iris recognition group （48 eyes, 47.1%） （X2=4.99, P〈0.05）. The degree of astigmatism in the iris recognition group （-0.19±0.24 D） was significantly lower than that in the non-iris recognition group （-0.30±0.36 D） （t=2.49, P〈0.05）. At a 6.0 mm pupil size, there was a statistically significant difference in third-order aberration root mean square value between the iris recognition group and non-iris recognition group （t=2.22, 3.31, P〈0.05）. Six months after the operation, the contrast sensitivity of the non-iris recognition group returned to their preoperative baseline. However, the iris recognition group had slightly better contrast sensitivity than their preoperative levels. Conclusion First-time iris recognition can increase visual quality in wavefront aberration-guided LASIK.

关 键 词：近视 虹膜识别 波前像差 角膜磨镶术 激光原位 

分 类 号：R77[医药卫生—眼科]