目的:比较波前像差仪OPD-Scan Ⅲ、光学相干生物测量仪IOL Master、三维眼前节分析系统Pentacam及自动电脑验光仪KR-8900四种不同仪器测量角膜曲率、角膜散光的差异性和一致性,指导白内障术前检查应用.方法:前瞻性临床研究.选取2017-04/06在我院就诊的白内障患者45例86眼,分别应用 OPD-Scan Ⅲ与Pentacam、IOL Master、KR-8900测量患者受检眼角膜曲率(K1、K2)和散光轴位,并计算出平均角膜曲率(mean keratometry,Km)、散光矢量J0和J45,采用配对样本t检验对测量结果的差异进行比较,相关性分析采用线性相关分析,一致性评价采用Bland-Altman分析.结果:在测量K1值时,OPD-Scan Ⅲ与IOL Master测量值的差异有统计学意义(P0.05).经Pearson相关分析,其结果显示:OPD-Scan Ⅲ与KR-8900、IOL Master 及 Pentacam 测量值间均有一定相关性(r=0.408 ~ 0.980,P0 05). All biometry measurements revealed good liner correlation (r=0.408-0.980, P<0.001). The Biand-Aitman showed that the corneal curvature and astigmatism vectors examined by OPD-Scan Ⅲ and Aii other devices had non-comparable results,except for the comparison of K1, K2and Kmmeasured by OPD-Scan Ⅲand KR-8900.CONCLUSION: OPD-Scan Ⅲ and KR-8900 can be interchangeable for the measurements of corneal curvature, while the others are not directly interchangeable. The astigmatic results obtained from OPD-Scan Ⅲ are not completely interchangeable with KR-8900,IOL Master or Pentacam.
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