Efficacy and predictability of laser in situ keratomileusis for low astigmatism of 0.75 diopter or less
Efficacy and predictability of laser in situ keratomileusis for low astigmatism of 0.75 diopter or less
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DOI：
10.1016/j.jcrs.2012.09.024
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发表时间：
2013-03-01
影响因子：
2.8
通讯作者：
Linke, Stephan J.
中科院分区：
文献类型：
--
作者：
Frings, Andreas;Katz, Toam;Linke, Stephan J.
目得：研究波前优化激光原位角膜磨镶术（LASIK）治疗0.75屈光度（D）或更低散光的近视眼的屈光和视力结果。单位：德国汉堡-艾本德大学医学中心和德国和奥地利的Care Vision私人诊所。设计：回顾性横断面数据分析。方法：该研究包括术前屈光柱镜为0.75 D或更小且术前主观球镜在-2.75 D和-11.50 D之间的连续近视患者。根据术前屈光柱镜度数（0.25 D、0.50 D和0.75 D）形成三个亚组。术前和术后评估明显屈光度、裸眼远视力（UDVA）和矫正远视力。结果：本研究纳入了448例患者的448只眼（男性145例，女性303例;手术时平均年龄37.8岁+/- 9.4 [SD]）。术后4个月（平均116.8 +/- 27.7天），平均UDVA为0.10 +/- 0.13 logMAR，平均明显屈光等效球镜（MRSE）为-0.05 +/- 0.68 D。术前圆柱体组之间的有效性或安全性无统计学显著差异。散光过矫术前柱镜0.25 D和0.50 D建议的校正指数，误差的大小，成功指数，扁平index.CONCLUSIONS：虽然平均UDVA和平均MRSE获得的4个月随访是适当的，0.50 D或更少的术前柱镜显着过矫。因此，在考虑对0.50 D或更小的明显柱镜进行完全散光矫正时应谨慎。财务披露：Frings先生得到了位于德国埃尔兰根的Wavelight GmbH的资助。没有作者在提到的任何材料或方法中拥有经济或所有权利益。白内障屈光手术杂志2013; 39：366-377（C）2013 ASCRS和ESCRS
PURPOSE: To examine the refractive and visual outcomes of wavefront-optimized laser in situ keratomileusis (LASIK) in myopic eyes with low astigmatism of 0.75 diopter (D) or less.SETTING: University Medical Center Hamburg-Eppendorf, Germany, and Care Vision private clinics, Germany and Austria.DESIGN: Retrospective cross-sectional data analysis.METHODS: This study comprised consecutive myopic patients with a preoperative refractive cylinder of 0.75 D or less and a preoperative subjective sphere between -2.75 D and -11.50 D. Three subgroups were formed based on preoperative refractive cylinder magnitude (0.25 D, 0.50 D, and 0.75 D). Manifest refraction, uncorrected distance visual acuity (UDVA), and corrected distance visual acuity were assessed preoperatively and postoperatively. The astigmatic changes were determined using Alpins vector analysis.RESULTS: This study enrolled 448 eyes of 448 patients (145 men, 303 women; mean age at surgery 37.8 years +/- 9.4 [SD]). By 4 months (mean 116.8 +/- 27.7 days) postoperatively, the mean UDVA was 0.10 +/- 0.13 logMAR and the mean manifest refraction spherical equivalent (MRSE) -0.05 +/- 0.68 D. There was no statistically significant difference in efficacy or safety between the preoperative cylinder groups. Astigmatic overcorrection for a preoperative cylinder of 0.25 D and 0.50 D was suggested by the correction index, the magnitude of error, the index of success, and the flattening index.CONCLUSIONS: Although the mean UDVA and mean MRSE obtained by the 4-month follow-up were appropriate, a preoperative cylinder of 0.50 D or less was significantly overcorrected. Accordingly, caution should be used when considering full astigmatic correction for manifest cylinder of 0.50 D or less.Financial Disclosure: Mr. Frings was supported by a grant from Wavelight GmbH, Erlangen, Germany. No author has a financial or proprietary interest in any material or method mentioned. J Cataract Refract Surg 2013; 39:366-377 (C) 2013 ASCRS and ESCRS