Zheng Wang, Jiaqi Chen, Bin Yang
Abstract
目的:观察LASIK术后角膜后曲率的改变,并研究其与残留角膜床厚度的关系.方法:采用ORBSCAN裂隙扫描角膜地形图系统对32只眼LASIK手术前和手术后三个月角膜后表面曲率进行测定.结果:LASIK术后角膜后表面均有不同程度的向前突出,残留角膜床厚度大于250μm者,平均前突7±6μm,而在高度近视患者剩余角膜床厚度小于250μm,术后角膜后表面中央前突达22±9μm.结论:LASIK术后角膜后表面前凸增加,残留角膜床小于250μm者术后发生角膜扩张的危险性可能增加.
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目的:观察LASIK术后角膜后曲率的改变,并研究其与残留角膜床厚度的关系.方法:采用ORBSCAN裂隙扫描角膜地形图系统对32只眼LASIK手术前和手术后三个月角膜后表面曲率进行测定.结果:LASIK术后角膜后表面均有不同程度的向前突出,残留角膜床厚度大于250μm者,平均前突7±6μm,而在高度近视患者剩余角膜床厚度小于250μm,术后角膜后表面中央前突达22±9μm.结论:LASIK术后角膜后表面前凸增加,残留角膜床小于250μm者术后发生角膜扩张的危险性可能增加.
Key concepts: Keratomileusis, Corneal topography, Ophthalmology, Optometry, In situ, Medicine, Cornea, Geography