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Xiao Han;Yubao Zhang;Gang Shi;Guo Liu;Sizhu Ai;Yidi Wang;Qin Zhang;Xingdao He; 《Journal of biophotonics》2024,17(4):e202300441
Quantifying corneal elasticity after femtosecond laser-assisted in situ keratomileusis (FS-LASIK) procedure plays an important role in improving surgical safety and quality, since some latent complications may occur ascribing to changes in postoperative corneal biomechanics. Nevertheless, it is suggested that current research has been severely constrained due to the lack of an accurate quantification method to obtain postoperative corneal elasticity distribution. In this paper, an acoustic radiation force optical coherence elastography system combined with the improved phase velocity algorithm was utilized to realize elasticity distribution images of the in vivo rabbit cornea after FS-LASIK under various intraocular pressure levels. As a result, elasticity variations within and between the regions of interest could be identified precisely. This is the first time that elasticity imaging of in vivo cornea after FS-LASIK surgery was demonstrated, and the results suggested that this technology may hold promise in further exploring corneal biomechanical properties after refractive surgery. 相似文献
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摘要 目的：比较SMILE与FS-LASIK术后屈光回退发生情况,分析屈光回退相关因素。方法：回顾性选取2020.1-2021.12于贵州医科大学附属医院行SMILE、FS-LASIK手术患者112例（224眼）,按手术术式不同分为全飞组（104眼）和半飞组（120眼）。于术后2年统计屈光回退情况,分为屈光回退组和无屈光回退组,分析相关因素。结果：术后随访2年内,两组屈光回退率相比有差异（P<0.045）。屈光回退组术前术后曲率差值、术前近视屈光度、术后角膜曲率变化幅度均高于无屈光回退组（P<0.05）。多因素回归分析显示,术前术后曲率差值、术前近视屈光度、术后角膜曲率变化幅度均是屈光回退的相关因素（P<0.05）。三指标联合预测屈光回退的AUC值高于单项预测（P<0.05）。结论：两种术式预后屈光回退率相当,术前术后曲率差值、术前近视屈光度、术后角膜曲率变化幅度均是屈光回退的相关因素,且各指标联合预测预后屈光回退价值好。 相似文献
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