中山大学学报（医学科学版）2024，Vol.45Issue(3)：484-492,9.
新PCI生物测量仪的重复性、再现性和一致性
Repeatability and Reproducibility of a New Ocular Biometer Based on Partial Coherence Interferometry and Its Agreement with IOL Master 500
摘要
Abstract
[Objective]To assess the repeatability(intra-operator variability)and reproducibility(inter-operator variability)of a new partial coherence interferometry(PCI)-based ocular biometer,Myopia Master,and its agreement with IOL Master 500 for measuring axial length(AL)and corneal curvature(K)in children aged 8-12 years.[Methods]The same operator measured school children with the Myopia Master and the IOL Master 500 in random order to assess agreement.Additionally,some of these children received measurements from another operator using the Myopia Master to assess repeatability and reproducibility.AL,flat keratometry(Kf),steep keratometry(Ks),mean keratometry(Km),J0 and J45 were analyzed.The repeatability and reproducibility were assessed by the within-subject standard deviation(Sw),test-retest repeatability(TRT),coefficient of variation(CoV)and intra-class correlation coefficient(ICC).The agree-ment between the Myopia Master and the IOL Master 500 was assessed by Bland-Altman plots and 95%limits of agree-ment(LoA).[Results]Both repeatability and reproducibility of the Myopia Master were high for AL measurements(Sw=0.02 mm,ICC=0.999;Sw=0.04 mm,ICC=0.998),but moderate for K measurements(Sw range,0.04 to 0.12 D,ICC range,0.861 to 0.991;Sw range,0.06 to 0.20 D,ICC range,0.835 to 0.992).There were significant mean differences be-tween the Myopia Master and the IOL Master 500 in measurements of AL(-0.01±0.04)mm,Kf(-0.09±0.15)D,Ks(-0.47±0.40)D,and Km(-0.28±0.23)D,J0(0.18±0.20)D and J45(-0.01±0.12)D.[Conclusions]The Myopia Master provided high repeatability and reproducibility for AL measurements in schoolchildren with myopia,but the Myopia Master and the IOL Master 500 cannot be used interchangeably in measuring AL and K.关键词
部分相干干涉/眼轴长度/角膜曲率/重复性/再现性/一致性Key words
partial coherence interferometry the(PCI)/axial length(AL)/corneal curvature(K)/repeatability/re-producibility/agreement分类
医药卫生引用本文复制引用
陈烁烁,杨正菲,黎紫璇,叶桂彤,杨晓,王梦怡..新PCI生物测量仪的重复性、再现性和一致性[J].中山大学学报（医学科学版）,2024,45(3):484-492,9.基金项目
国家自然科学基金(82070994) （82070994）
