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目的 探讨PRK术后角膜地形图前表面曲率变化(X)与临床屈光度变化(Y)的关系.方法 对92例144眼经PRK治疗的患者术前及术后6月以上行角膜地形图及验光检查.结果 X与Y关系数学模式为Y=1.3746X+0.6506,相关系数r为0.8165,P<0.001.结论 PRK术后角膜地形图前表面曲率变化与临床屈光度变化有高度相关关系,明确其关系,对判断术后矫正量,防止屈光回退有一定的指导意义.
Objective To investigate the relationship between the curvature of the anterior surface of corneal topography (PR) and the changes of clinical refraction (Y) after PRK.Methods 92 cases of PRK-treated patients underwent PRK before and after 6 months with corneal topography and ophthalmoscopy .Results The mathematical model of X and Y was Y = 1.3746X + 0.6506, the correlation coefficient was 0.8165, P <0.001. Conclusions The curvature of the anterior corneal topography after PRK has a high correlation with the change of clinical refraction, , To determine the amount of postoperative correction, to prevent refractive regression has some guiding significance.