Comparison of Anterior Segment Measurements Between Swept-source Optical Coherence Tomography and Schiempflug Coherence Interferometer

Jiyun Song, Kyung Sun Na
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Abstract

Purpose: To assess the agreement between anterior segment measurements obtained using swept-source optical coherence tomography (Anterion®, Heidelberg Engineering Inc., Heidelberg, Germany) and Scheimpflug partial coherence interferometry (Pentacam HR®, OCULUS, Wetzlar, Germany).Methods: We analyzed the anterior and posterior corneal keratometry, Cartesian astigmatism (J0), oblique astigmatism (J45), anterior chamber depth (ACD), and central corneal thickness (CCT) measurements obtained using the two devices in 65 eyes of 43 subjects.Results: The mean differences between the anterior flat K, anterior steep K, anterior mean K, anterior J0, anterior J45, posterior flat K, posterior steep K, posterior mean K, posterior J0, posterior J45, ACD, and CCT measurements were -0.13 ± 0.34, -0.02 ± 0.33, -0.05 ± 0.31, -0.03 ± 0.39, -0.06 ± 0.35, 0.12 ± 0.09, 0.07 ± 0.08, 0.10 ± 0.06, -0.02 ± 0.14, 0.01 ± 0.16, 0.04 ± 0.06, and -3.51 ± 7.42, respectively. All measurements except posterior J0 and J45 had interclass correlation coefficients greater than 0.75.Conclusions: The mean differences and 95% limits of agreement in this study are consistent with previously reported values. There was a high level of agreement between Anterion® and Pentacam HR®. However, considering the statistically significant differences and limits of agreement for certain measurements, caution should be exercised when assuming interchangeability between these devices.
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横扫光源光学相干断层扫描与施普弗鲁格相干干涉仪的前段测量比较
目的:评估使用扫源光学相干断层扫描(Anterion®,海德堡工程公司,德国海德堡)和Scheimpflug部分相干干涉仪(Pentacam HR®,OCULUS公司,德国韦茨拉尔)进行的前段测量之间的一致性:我们对 43 名受试者的 65 只眼睛使用这两种仪器进行的前后角膜角膜度数、笛卡尔散光(J0)、斜散光(J45)、前房深度(ACD)和中央角膜厚度(CCT)测量结果进行了分析:前平 K 光、前陡 K 光、前平均 K 光、前 J0 光、前 J45 光、后平 K 光、后陡 K 光、后平均 K 光、后 J0 光、后 J45 光、ACD 和 CCT 测量值之间的平均差分别为 -0.13 ± 0.34、-0.02 ± 0.33、-0.05 ± 0.31、-0.03 ± 0.39、-0.06 ± 0.35、0.12 ± 0.09、0.07 ± 0.08、0.10 ± 0.06、-0.02 ± 0.14、0.01 ± 0.16、0.04 ± 0.06 和 -3.51 ± 7.42。除后 J0 和 J45 外,所有测量的类间相关系数均大于 0.75:本研究的平均差和 95% 的一致性限值与之前报道的值一致。Anterion® 和 Pentacam HR® 之间的一致性很高。然而,考虑到某些测量结果在统计学上存在显著差异和一致性限制,在假设这些设备之间具有互换性时应谨慎行事。
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