The Long-term observation of the quick contrast sensitivity and its influencing factors after SMILE

作者：Weijung Ten, Yangyi Huang, Yiyong Xian, Yuhao Ye, Xingtao Zhou, Jing Zhao · 发表于：Photodiagnosis and Photodynamic Therapy · 年份：2025 · DOI：10.1016/j.pdpdt.2025.105309 · 被引用次数：1 · 研究领域：Corneal surgery and disorders、Ophthalmology and Visual Impairment Studies、Retinal Diseases and Treatments

PURPOSE: This study investigates the long-term impact of Small Incision Lenticule Extraction (SMILE) on quantitative contrast sensitivity (qCSF) and its determinants. MATERIALS AND METHODS: The research involved 80 eyes (mean spherical equivalent -6.10±1.95 D), including 40 highly myopic eyes. Seven years post-surgery, assessments included manifest refraction, axial length, corneal topography, and qCSF. Tangential curvature difference maps measured decentration and effective optical zone (EOZ). Statistical analysis explored correlations between qCSF metrics and ocular parameters. RESULTS: SMILE surgeries were uncomplicated. Safety and efficacy indices were 0.89±0.21 and 1.11±0.11, respectively. Significant correlations existed between cylindrical refraction (CR), residual CR, and qCSF [CR: AULCSF (r=0.061, p=0.010), CSF acuity (r=1.717, p=0.010); residual CR: AULCSF (r=-0.174, p=0.004), CSF acuity (r=-6.271, p<0.001)]. Subgroup analysis showed enhanced contrast sensitivity with lower ablation. Higher initial CR and lower residual CR correlated with superior qCSF. Long-term decentration negatively impacted qCSF in high myopia. EOZ in low-middle myopia differed significantly in qCSF metrics. CONCLUSION: SMILE demonstrated excellent 7-year outcomes. In the low-to-moderate myopia group, all eyes (100 %) achieved UDVA of 20/25 or better, and postoperative astigmatism was within ±0.50 D. In the high myopia group, 72.5 % achieved UDVA ≥20/25. Greater preservation of corneal thicknes...