Comparison of visual acuity and higher-order aberrations after femtosecond lenticule extraction and small-incision lenticule extraction
Comparison of visual acuity and higher-order aberrations after femtosecond lenticule extraction and small-incision lenticule extraction
复制标题
DOI：
10.1016/j.clae.2014.03.001
复制
发表时间：
2014-08-01
影响因子：
3.2
通讯作者：
Yilmaz, Omer F.
中科院分区：
文献类型：
--
作者：
Agca, Alper;Demirok, Ahmet;Yilmaz, Omer F.
目的：比较飞秒透镜摘除术（FLEX）和小切口透镜摘除术（SMILE）后的术后视力和高阶像差（HOA）。方法：回顾性分析屈光透镜摘除术患者的医疗记录。 20 名患者接受了 FLEX 治疗。回顾性地确定了由 20 名 SMILE 患者组成的可比较组。仅随机选择每位患者的一只眼睛进行研究。对两组患者术前和术后6个月的视力、主观屈光和角膜地形图进行分析。根据 4 毫米和 6 毫米直径中央角膜区域的地形数据计算总 HOA、球差、慧差和三叶形。结果：SMILE 组术前平均 SE 为 -4.03 ± 1.61，FLEX 组为 -4.46 ± 1.61。术后一年，SMILE 组的平均 SE 为 -0.33 ± 0.25，FLEX 组的平均 SE 为 -0.31 ± 0.41（p = 0.86）。在 SMILE 组中，更多眼睛处于目标屈光 0.50 D 以内（95% 对 75%）；然而，差异不具有统计学意义（p = 0.18）。此外，80% 的 FLEX 眼和 95% 的 SMILE 眼的未矫正远视力为 20/25 或更高 (p = 0.34)。两组术后总 HOA、球面像差、慧差和三叶形像差均有所增加。然而，术前和术后各组之间没有统计学上的显着差异。结论：FLEX 和 SMILE 的屈光结果具有可比性。此外，不同微透镜提取技术引起的角膜像差似乎彼此相似。 (C) 2014 年英国隐形眼镜协会。由爱思唯尔有限公司出版。保留所有权利。
Purpose: To compare postoperative visual acuity and higher-order aberrations (HOAs) after femtosecond lenticule extraction (FLEX) and after small-incision lenticule extraction (SMILE).Methods: Medical records of refractive lenticule extraction patients were retrospectively reviewed. Twenty patients were treated with FLEX. A comparable group of 20 SMILE patients were retrospectively identified. Only one eye of each patient was randomly chosen for the study. Visual acuity, subjective manifest refraction and corneal topography before and 6 months after the surgery were analyzed for both groups. Total HOAs, spherical aberrations, coma and trefoil were calculated from topography data over the 4- and 6-mm-diameter central corneal zone.Results: The mean preoperative SE was -4.03 1.61 in the SMILE group and -4.46 1.61 in the FLEX group. One year after surgery, the mean SE was -0.33 0.25 in the SMILE group and -0.31 0.41 in the FLEX group (p = 0.86). In the SMILE group a greater number of eyes were within 0.50 D of the target refraction (95% versus 75%); however, the difference was not statistically significant (p = 0.18). Furthermore, 80% of FLEX eyes and 95% of SMILE eyes had an uncorrected distance visual acuity of 20/25 or better (p = 0.34). Total HOAs, spherical aberration, coma and trefoil increased postoperatively in both groups. However, there was no statistically significant difference between the groups preoperatively and postoperatively.Conclusion: FLEX and SMILE result in comparable refractive results. In addition, corneal aberrations induced by different techniques of lenticule extraction seemed similar to each other. (C) 2014 British Contact Lens Association. Published by Elsevier Ltd. All rights reserved.