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Abstract：
VISUMAX 800 was introduced to improve the patient experience and clinical outcomes of small incision lenticule extraction (SMILE). This was a retrospective, matched, and case-control study (1:2) controlled for preoperative central corneal thickness and refractive error that compared early refractive and visual outcomes after SMILE using VISUMAX 800 and VISUMAX 500 to treat myopia. We included 50 eyes that underwent the VISUMAX 800 SMILE and 100 eyes that underwent the VISUMAX 500 SMILE. SMILE using VISUMAX 800 was performed using the CentraLign aid for vertex centration. Cyclotorsion was controlled by an OcuLign assistant in the VISUMAX 800 group after corneal marking. Corneal higher-order aberrations (HOAs) were evaluated using a Pentacam 1 month after surgery. No differences were observed in the pre- and post-operative refractive and visual outcomes at 1 day, 1 month, and 6 months after surgery. VISUMAX 800 induced less total HOAs than VISUMAX 500 (P = 0.036). No statistically significant differences were observed in the amounts of induced spherical aberrations or vertical and horizontal comas. No differences were observed in the 1 month and 6 months refractive and visual outcomes between two SMILE procedures, except for VISUMAX 800, which resulted in lower postoperative total HOAs than VISUMAX 500.
摘要：
引入VISUMAX800以改善小切口微透镜摘除（SMILE）的患者体验和临床结果。这是一次回顾,匹配，和病例对照研究（1：2）控制术前中央角膜厚度和屈光不正，比较SMILE使用VISUMAX800和VISUMAX500治疗近视后的早期屈光和视觉结果。我们包括50只接受VISUMAX800微笑的眼睛和100只接受VISUMAX500微笑的眼睛。使用VISUMAX800进行微笑是使用CentraLign辅助进行顶点集中。角膜标记后，VISUMAX800组的OcuLign助手控制了周期旋转。手术后1个月使用Pentacam评估角膜高阶像差（HOAs）。在手术前和手术后1天的屈光和视觉结果没有观察到差异。1个月,手术后6个月。VISUMAX800诱导的总HOAs少于VISUMAX500（P=0.036）。在诱发的球面像差或垂直和水平昏迷的量中没有观察到统计学上的显着差异。两个SMILE手术在1个月和6个月的屈光和视觉结果上没有观察到差异，除了VISUMAX800，导致术后总HOAs低于VISUMAX500。
