Predictors of Femtosecond Laser–Assisted Arcuate Keratotomy Efficacy for Astigmatism Correction in Cataract Surgery

作者：Fan Zhang, Shaowei Li, Dongmei Huo, Qiumei Li · 发表于：Journal of Refractive Surgery · 年份：2022 · DOI：10.3928/1081597x-20220609-01 · 被引用次数：16 · 研究领域：Corneal surgery and disorders、Intraocular Surgery and Lenses、Ophthalmology and Visual Impairment Studies

PURPOSE: To evaluate the predictors related to the efficacy of epithelium- and Bowman membrane-penetrating femtosecond laser–assisted arcuate keratotomy (FSAK) in the treatment of preoperative astigmatism in patients with cataracts and to clarify the predictive role of the incision-to-limbus distance. METHODS: This retrospective study included patients who underwent femtosecond laser–assisted cataract surgery combined with FSAK using the LenSX platform (Alcon Laboratories, Inc) at Beijing Aier-Intech Eye Hospital from March 2017 to December 2021. The Lenstar LS900 (Haag-Streit, Inc) was used to measure the horizontal corneal diameter, and ImageJ software (National Institutes of Health) was used to measure the vertical corneal diameter and incision-to-limbus distance. Finally, the measured values were converted. Changes in corneal astigmatism before and 3 months after surgery were analyzed using Alpins vector analysis. Correlation analysis and regression analysis were used to evaluate the factors associated with surgically induced astigmatism (SIA) in preoperative ocular biometric parameters. RESULTS: The study included 94 eyes of 94 patients. The mean target induced astigmatism was 1.36 ± 0.44 diopters (D), SIA was 0.82 ± 0.43 D, and mean difference vector was 0.70 ± 0.40 D. Pearson correlation analysis and univariate regression analysis showed that preoperative corneal astigmatism, arcuate keratotomy arc length, incision-to-limbus distance, and astigmatism type were signific...