Outcomes of Small Incision Lenticule Extraction (SMILE) in Low Myopia

屈光度 小切口晶状体摘除术 折射 医学 眼科 中间视觉 主观折射 视力 折射误差 验光服务 光学 物理 角膜磨镶术 明视 视网膜
作者
Dan Z. Reinstein,Glenn I. Carp,Timothy J. Archer,Marine Gobbé
出处
期刊:Journal of Refractive Surgery [SLACK, Inc.]
卷期号:30 (12): 812-818 被引量:135
标识
DOI:10.3928/1081597x-20141113-07
摘要

To report the visual and refractive outcomes of small incision lenticule extraction for low myopia using the VisuMax femtosecond laser (Carl Zeiss Meditec, Jena, Germany).A retrospective analysis of 120 consecutive small incision lenticule extraction procedures was performed for low myopia. Inclusion criteria were preoperative spherical equivalent refraction up to -3.50 diopters (D), cylinder up to 1.50 D, and corrected distance visual acuity of 20/20 or better. Outcomes analysis was performed for all eyes with 1-year follow-up according to the Standard Graphs for Reporting Refractive Surgery, and also including mesopic contrast sensitivity.One-year data were available for 110 eyes (92%). Preoperatively, mean spherical equivalent refraction was -2.61 ± 0.54 D (range: -1.03 to -3.50 D) and mean cylinder was 0.55 ± 0.38 D (range: 0.00 to 1.50 D). Postoperatively, mean spherical equivalent refraction was -0.05 ± 0.36 D (range: -0.94 to +1.25 D) and mean cylinder was ± 0.50 D in 84% and ± 1.00 D in 99% of eyes. Uncorrected distance visual acuity was 20/20 or better in 96% of eyes and 20/25 or better in 100% of eyes. One line of corrected distance visual acuity was lost in 9%, but no eyes lost two or more lines. There was an initial overcorrection in mean spherical equivalent refraction on day 1 (+0.37 D) as expected, which regressed to +0.10 D at 1 month and -0.05 D at 3 months, after which stability was reached (mean spherical equivalent refraction was -0.05 D at 1 year). Contrast sensitivity at 1 year was slightly increased at 3, 6, 12, and 18 cycles per degree (P < .05).Small incision lenticule extraction for low myopia was found to be safe and effective with outcomes similar to those previously reported for LASIK.
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