虹膜定位对飞秒联合波前像差引导LASIK治疗近视散光的疗效

摘要

AIM: To observe effect of the iris location to femtosecond - combined wavefront guided LASIK for myopia and astigmatism.•METHODS:The patients with astigmatism >1. 0D during the same time and followed up for 1a were selected. A total of 129 eyes in 67 patients were treated under iris location with femtosecond-combined wavefront guided LASIK ( experimental group) and 161 eyes in 82 cases with femtosecond-combined wavefront guided LASIK ( control group) . Laser cutting went with the same laser machine. The uncorrected visual acuity ( UCVA ) , best corrected visual acuity ( BCVA) , and wavefront aberration between the two groups were compared at 1, 3, 6mo and 1a after surgery.•RESULTS:At 1 and 3mo after surgery, the number of patients with better postoperative UCVA than preoperative BCVA between the two group showed a statistically significant difference (χ2=6. 423, P=0. 011,χ2=14. 431, P=0. 01 ); at 1d and 1mo after surgery, the residual astigmatism showed a statistically significant difference between two groups (t=1. 98, P 0. 05 ). At 6mo and 1a after surgery, the differences on UCVA between the two groups weren’t significant ( P > 0. 05 ). Until 1a after surgery, the root mean square ( RMS ) of high order wavefront aberration of the two groups, spherical aberration and coma aberration ( COMA ) were all enhanced compared to before surgery(P1.0D并有1a随访记录的近视患者,飞秒激光制作角膜瓣后启动虹膜定位成功行波前像差引导 LASIK 术(试验组)67例129眼与飞秒激光制作角膜瓣后无虹膜定位行波前像差引导LASIK术(对照组)82例161眼。在同一台激光机下进行激光切削。术后1、3、6mo,1a分别对两组患者术后裸眼视力( uncorrected visual acuity,UCVA)、最佳矫正视力(best corrected visual acuity,BCVA)、电脑验光、波前像差结果对比分析。结果：术后1、3 mo UCVA超过术前BCVA 1行者,两组比较差异有统计学意义(χ2=6.423, P=0.011；χ2=14.431, P0.05)。术后1a内两组高阶像差均方根值、球差、彗差均增加,较术前比较差异有统计学意义(P<0.05)。术后1、3mo高阶像差均方根值两组比较差异均有统计学意义(P<0.05)。术后1、3、6mo,1a彗差的增加试验组较对照组明显减少,两组比较差异均有统计学意义(P<0.05)。结论：虹膜定位技术的应用在飞秒制瓣联合波前像差引导LASIK治疗近视散光中,具有术后裸眼视力恢复快,高阶像差均方根值及彗差增加较少,残留散光少的特点,具有更好更稳定的治疗效果。