Purpose

To evaluate the outcomes of femtosecond laser–assisted arcuate keratotomy combined with cataract surgery in eyes with low-to-moderate corneal astigmatism.

Setting

Eyes of York Private Practice Ophthalmology Clinic, York, Pennsylvania, USA.

Design

Retrospective case series.

Methods

This retrospective analysis included case records of patients with preexisting corneal astigmatism ranging from 0.5 to 2.0 diopter (D). Study parameters included corneal astigmatism, refractive astigmatism, and uncorrected (UDVA) and corrected (CDVA) distance visual acuities. The results, which were analyzed at 3 months postoperatively, included frequency distribution histograms, vector analysis, and single-angle polar plots.

Results

The study comprised case records of 189 eyes of 143 patients (56 men and 87 women). The postoperative refractive astigmatism was reduced significantly compared with preoperative corneal astigmatism to 0.14 D ± 0.23 (SD) from 0.92 ± 0.34 D (P < .001). One hundred eighty-one eyes (95.8%) demonstrated postoperative refractive astigmatism of 0.5 D or less. The mean surgically induced change along the preoperative steep axis was −0.59 ± 0.56 D, and the change along the orthogonal axis was 0.01 ± 0.35 D. Postoperatively, 171 eyes (90.5%) had astigmatism angle of error of 15 degrees or less. The postoperative mean UDVA and CDVA were 0.09 ± 0.16 logarithm of the minimum angle of resolution (logMAR) and 0.02 ± 0.05 logMAR, respectively. One hundred seventy eyes (90%) had a postoperative UDVA of 20/30 or better. The results demonstrated stability at 12 months postoperatively. No intraoperative or postoperative arcuate keratotomy-related events were observed.

Conclusion

The results suggest that femtosecond laser–assisted arcuate keratotomy represents a safe and effective method for astigmatism correction at the time of cataract surgery with demonstrated stability of correction for at least 1 year postoperatively.

中文翻译：

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白内障手术时飞秒激光辅助弓形角膜切开术治疗先前存在的散光

目的

为了评估低至中度角膜散光的飞秒激光辅助弓形角膜切开术联合白内障手术的效果。

设置

约克私人执业眼科诊所的眼睛，美国宾夕法尼亚州约克。

设计

回顾案例系列。

方法

这项回顾性分析包括了既往存在角膜散光的患者病例记录，范围从0.5到2.0屈光度（D）。研究参数包括角膜散光，屈光散光和未矫正（UDVA）和矫正（CDVA）远视力。术后3个月进行分析的结果包括频率分布直方图，矢量分析和单角度极坐标图。

结果

这项研究包括143例患者的189眼病例记录（56例男性和87例女性）。与术前角膜散光相比，术后屈光散光从0.92±0.34 D降低至0.14 D±0.23（SD）（P <.001）。一百八十一只眼（95.8％）显示术后屈光散光为0.5 D或更小。术前沿陡轴的平均手术变化为-0.59±0.56 D，沿正交轴的平均变化为0.01±0.35D。术后，有171眼（90.5％）的散光误差角为15度或更小。术后平均UDVA和CDVA分别为最小分辨角（logMAR）的0.09±0.16和0.02±0.05 logMAR的对数。一百七十只眼（90％）的术后UDVA为20/30或更高。结果表明术后12个月稳定。没有观察到术中或术后弓形角膜切开术相关事件。

结论

结果表明，飞秒激光辅助弧形角膜切开术是白内障手术时矫正散光的一种安全有效的方法，在术后至少一年内已证明其矫正稳定性。