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[摘要]
目的:评价Haigis-L公式与临床资料法SRK/T公式(CH-SRK/T)预测近视患者准分子激光原位角膜磨镶术(laser
in situ keratomileusis,LASIK)术后人工晶状体度数的差异。
方法:选取我院2012-10/2013-02手术患者72例140眼,眼轴≤26mm,排除其他眼部疾病。分别用Haigis-L,CH-SRK/T计算LASIK手术后人工晶状体度数,用SPSS 18.0统计软件进行统计学分析。
结果:Haigis-L公式计算LASIK术后豪雅人工晶状体度数平均值为 22.99±1.38D, CH-SRK/T计算豪雅人工晶状体度数平均值为19.95±1.69D,配对样本均数t检验,成对差分均值-3.039±1.899D,Wilcoxon带符号秩检验,秩和为-3.408a,P=0.001; Haigis-L公式所测得LASIK术后眼力健AR40人工晶状体度数为23.26±1.49D,CH-SRK/T公式所测得LASIK术后眼力健AR40人工晶状体度数的平均值为20.05±1.69D,配对样本均数t检验,成对差分均值为-3.208±1.823D,Wilcoxon带符号秩检验,秩和为-3.408a,P=0.001。
结论:近视患者LASIK术后人工晶状体度数用CH-SRK/T较Haigis-L公式测定结果低,照此植入人工晶状体术后更容易偏向欠矫。
[Key word]
[Abstract]
AIM: To evaluate the differences between Haigis-L formula and CH-SRK/T when predicting intraocular lens power after laser
in situ keratomileusis(LASIK)surgery for myopia.
METHODS: Seventy-two patients(140 eyes, axial length ≤26mm)after LASIK surgery were recruited between October 2012 and February 2013. Participants with other ophthalmic diseases were excluded. Haigis-L and CH-SRK/T formula were used to calculate the intraocular lens power separately after LASIK surgery and the data were analyzed using SPSS 18.0 software.
RESULTS: The mean value of Hoyaintraocular lens after LASIK was 22.99±1.38D by Haigis-L formula compared with 19.95±1.69D using CH-SRK/T formula. According to paired t-test, pairs of differential mean are -3.039±1.899D. Wilcoxon signed rank test was used and the sum of ranks was -3.408a(P=0.001). Meanwhile, the mean value of Allergan AR40 intraocular lens was 23.26±1.49D by Haigis-L formula; while the degree of intraocular lens calculated by CH-SRK/T formula was 20.05±1.69D. According to paired t-test, pairs of differential mean are -3.208±1.823D. Wilcoxon signed rank test was used and the sum of ranks was -3.408a(P=0.001).
CONCLUSION: After LASIK surgery for myopia, the degree of intraocular lens power measured by CH-SRK/T is lower than that by Haigis-L formula. The degree of intraocular lens power calculated by CH-SRK/T is more likely to be under corrected.
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