Objective: To evaluate the efficacy of optimized monovision correction using small incision lenticule extraction (SMILE) and femtosecond laser-assisted in situ keratomileusis (FS-LASIK) in myopic patients with presbyopia and to assess the corneal epithelial remodeling following these procedures. Methods: A prospective study was conducted. Thirty-two patients (64 eyes) with myopia and presbyopia who underwent surgical correction at Chongqing Bai Ji Eye Clinic from August 2021 to April 2023 were continuously included. There were 9 males and 23 females, with an average age of (44.25±2.96) years. The dominant eyes (32 eyes) underwent SMILE, while the non-dominant eyes (32 eyes) underwent FS-LASIK with mild myopia and partial negative spherical aberration induction. Data on visual acuity and refraction were collected preoperatively and at 1 week, 1 month, 3 months, and 6 months postoperatively. Total ocular aberrations were measured using the iProfiler Plus, and the corneal epithelial thickness in different regions was assessed using anterior segment optical coherence tomography. Safety and efficacy indices were calculated based on visual acuity, the defocus and contrast sensitivity were measured using the Binoptometer 4P binocular vision tester, and a patient satisfaction survey was performed. Results: At 1 week postoperatively, the uncorrected distance visual acuity (UDVA) of dominant eyes significantly improved compared to preoperative values. At 3 months postoperatively, the uncorrected near visual acuity (UNVA) of non-dominant eyes showed significant improvement (P<0.05), 96.9% (31 eyes) of the dominant eyes achieved UDVA of 1.0 or better, and 93.8% (30 eyes) of the non-dominant eyes achieved UNVA of 0.8 or better. The safety index for distance vision was 1.15±0.09, and the efficacy index was 1.15±0.11. At 1 week, 1 month, 3 months, and 6 months postoperatively, the proportion of dominant eyes with a spherical equivalent (SE) deviation within ±0.50 D of the target was 90.6% (29 eyes), 90.6% (29 eyes), 93.8% (30 eyes), and 96.2% (31 eyes), respectively; for non-dominant eyes, the corresponding proportions were 81.3% (26 eyes), 87.5% (28 eyes), 93.8% (30 eyes), and 96.2% (31 eyes). The postoperative spherical aberration was (0.11±0.03) μm for dominant eyes and (-0.01±0.04) μm for non-dominant eyes, showing a statistically significant difference (P<0.05). At 1 week and 1 month postoperatively, the central corneal epithelial thickness of non-dominant eyes was significantly higher than that of dominant eyes [(71.34±21.69) μm vs. (51.97±6.33) μm at 1 week, and (61.34±15.85) μm vs. (52.72±6.32) μm at 1 month; P<0.05]. Patient satisfaction was high, with 96.9% (31 patients) rating their satisfaction as "satisfactory" or higher. Conclusions: The combined use of SMILE and FS-LASIK for optimized monovision correction in myopic patients with presbyopia is both safe and effective, achieving high postoperative satisfaction. The SMILE procedure reduces the extent of corneal epithelial remodeling compared to FS-LASIK.
目的： 探讨双眼分别行飞秒激光小切口角膜基质透镜取出术（SMILE）和飞秒激光制瓣的准分子激光原位角膜磨镶术（FS-LASIK）的优化单眼视手术矫正伴近视眼伴老视患者的效果，以及双眼在接受不同手术方式后的角膜上皮重塑的情况。 方法： 前瞻性研究。连续纳入2021年8月至2023年4月于重庆白继眼科屈光手术中心因近视眼伴老视接受手术矫正的患者32例（64只眼），其中男性9例，女性23例，年龄（44.25±2.96）岁。将患者的主视眼（32只眼）行SMILE，非主视眼（32只眼）行FS-LASIK保留轻度近视并引入部分负球差。收集患者术前及术后1周及1、3、6个月的视力、屈光度数，采用iProfiler Plus屈光分析系统测量全眼像差，眼前节相干光层析成像术测量不同区域角膜上皮厚度，根据视力计算安全性指数和有效性指数，采用Binoptometer 4P双目视力仪测定离焦度数和对比敏感度，对患者进行手术满意度的问卷调查。 结果： 自术后1周起，主视眼裸眼远视力均优于术前；术后3个月起，非主视眼裸眼近视力均优于术前，差异均有统计学意义（P<0.05）。术后3个月时，主视眼裸眼远视力在1.0及以上的比例为96.9%（31/32），非主视眼裸眼近视力在0.8及以上的比例为93.8%（30/32），双眼远视力安全性指数为1.15±0.09，有效性指数为1.15±0.11。术后1周及1、3、6个月，主视眼与目标屈光度偏移在±0.50 D之内的眼分别占90.6%（29/32）、90.6%（29/32）、93.8%（30/32）、96.2%（25/26）；非主视眼与目标屈光度偏移在±0.50 D之间分别占81.3（26/32）%、87.5%（28/32）、93.8%（30/32）、96.2%（25/26）。术后主视眼和非主视眼球差分别为（0.11±0.03）和（-0.01±0.04）μm，差异有统计学意义（P<0.05）。术后1周、1个月时，非主视眼中央区角膜上皮厚度（71.34±21.69）和（61.34±15.85）μm，显著高于主视眼的（51.97±6.33）和（52.72±6.32）μm，差异有统计学意义（P<0.05）。患者术后满意度等级在满意及以上占比为96.9%（31/32）。 结论： 双眼分别行SMILE和FS-LASIK的优化单眼视手术矫正近视眼伴老视患者有较好的手术安全性及有效性，并获得较高的术后满意度。SMILE可减轻角膜上皮重塑的程度。.