Schallhorn Steven C, Venter Jan A, Hannan Stephen J, Hettinger Keith A, Teenan David
From the Department of Opthalmology, University of California, San Francisco (Schallhorn), San Francisco, California, USA; Optical Express (Schallhorn, Venter, Hannan, Hettinger, Teenan), Glasgow, United Kingdom.
From the Department of Opthalmology, University of California, San Francisco (Schallhorn), San Francisco, California, USA; Optical Express (Schallhorn, Venter, Hannan, Hettinger, Teenan), Glasgow, United Kingdom.
J Cataract Refract Surg. 2015 Nov;41(11):2501-12. doi: 10.1016/j.jcrs.2015.05.031.
To analyze results of wavefront-guided laser vision correction retreatments performed either by lifting the original flap or by surface ablation over the flap.
Optical Express, Glasgow, United Kingdom.
Retrospective case series.
This retrospective study included patients grouped according to whether they had flap lift enhancement or photorefractive keratectomy (PRK) performed over the LASIK flap. All retreatment procedures were performed with the Visx Star S4 IR excimer laser with wavefront-guided ablation profile derived from the iDesign aberrometer. Visual acuities, refractive outcomes, vector analysis of refractive cylinder and complications were analyzed in this study. The results of the last available clinical visit are presented.
This retrospective study included 290 eyes of 202 patients divided into 2 groups: 119 eyes that had flap lift enhancement (Group A), and 171 eyes in which photorefractive keratectomy (PRK) was performed over the LASIK flap (Group B). The mean follow-up was 4.0 ± 1.9 months in Group A and 4.2 ± 1.6 in Group B. The mean postoperative manifest spherical equivalent was -0.01 ± 0.35 D and +0.06 ± 0.39 D in Groups A and B, respectively. The percentage of eyes with postenhancement UDVA 20/20 or better was 87.4% in Group A and 79.5 % in Group B (P = .09). In Group A, 22 eyes (18.5%) developed epithelial ingrowth, of which surgical intervention was required in 2 eyes (1.7%). Grade 1 or less haze was noted in 9 (5.3%) eyes in Group B, and resolved in all cases within the first 6 postoperative months.
Both retreatment techniques were considered to be effective, predictable, and safe.
Steven C Schallhorn MD is a consultant to Abbott Medical Optics and Zeiss, and Global Medical Director for Optical Express. None of the other authors have a financial or proprietary interest in the products and materials presented in this paper.
分析通过掀起原角膜瓣或在角膜瓣上进行表面切削来进行波前引导的准分子激光原位角膜磨镶术（LASIK）再次手术的结果。
英国格拉斯哥的Optical Express。
回顾性病例系列研究。
这项回顾性研究纳入的患者根据其接受的是角膜瓣掀起增强手术还是在LASIK角膜瓣上进行的准分子激光角膜切削术（PRK）进行分组。所有再次手术均使用威视S4 IR准分子激光，并采用源自iDesign像差仪的波前引导消融模式。本研究分析了视力、屈光结果、屈光柱镜的矢量分析以及并发症情况。呈现的是最后一次可用临床随访的结果。
这项回顾性研究纳入了202例患者的290只眼，分为两组：119只眼接受了角膜瓣掀起增强手术（A组），171只眼在LASIK角膜瓣上进行了PRK手术（B组）。A组的平均随访时间为4.0±1.9个月，B组为4.2±1.6个月。A组和B组术后平均显性球镜等效度分别为-0.01±0.35D和+0.06±0.39D。增强术后最佳矫正视力（UDVA）达到20/20或更好的眼的比例在A组为87.4%，在B组为79.5%（P = 0.09）。在A组，22只眼（18.5%）发生了上皮内生，其中2只眼（1.7%）需要手术干预。B组有9只眼（5.3%）出现1级或更低程度的 haze，所有病例在术后前6个月内均消退。
两种再次手术技术均被认为有效、可预测且安全。
Steven C Schallhorn医学博士是雅培医疗光学公司和蔡司公司的顾问，也是Optical Express的全球医学总监。其他作者均对本文中所呈现的产品和材料没有财务或专利权益。
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