Eyes of York Cataract & Laser Center, York, Pennsylvania, USA.
IrisARC, Chandigarh, India.
J Cataract Refract Surg. 2019 Dec;45(12):1762-1769. doi: 10.1016/j.jcrs.2019.08.002.
To evaluate the outcomes of femtosecond laser-assisted arcuate keratotomy combined with cataract surgery in eyes with low-to-moderate corneal astigmatism.
Eyes of York Private Practice Ophthalmology Clinic, York, Pennsylvania, USA.
Retrospective case series.
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.
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.
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.
评估飞秒激光辅助弧形角膜切开术联合白内障手术治疗中低度角膜散光的效果。
美国宾夕法尼亚州约克私人执业眼科诊所的眼睛。
回顾性病例系列。
本回顾性分析包括术前角膜散光范围为 0.5 至 2.0 屈光度（D）的患者的病历记录。研究参数包括角膜散光、屈光性散光和未矫正（UDVA）和矫正（CDVA）远距视力。术后 3 个月分析结果，包括频率分布直方图、向量分析和单角度极坐标图。
该研究包括 143 名患者 189 只眼（56 名男性和 87 名女性）的病历记录。术后屈光性散光明显低于术前角膜散光，从 0.92±0.34 D 降至 0.14±0.23 D（P<.001）。181 只眼（95.8%）术后屈光性散光为 0.5 D 或更低。沿术前陡峭轴的平均手术诱导变化为-0.59±0.56 D，沿正交轴的变化为 0.01±0.35 D。术后，171 只眼（90.5%）散光角度误差为 15 度或更小。术后平均 UDVA 和 CDVA 分别为 0.09±0.16 最小分辨角对数（logMAR）和 0.02±0.05 logMAR。170 只眼（90%）术后 UDVA 为 20/30 或更好。结果表明术后 12 个月稳定。未观察到术中或术后弧形角膜切开术相关事件。
结果表明，飞秒激光辅助弧形角膜切开术是白内障手术中治疗散光的一种安全有效的方法，至少在术后 1 年内具有矫正稳定性。
