IOLMaster 500(蔡司,德国)是目前光学生物测量领域的金标准,本研究的主要目的是比较StarEyes 900与IOLMaster 500两种眼科生物测量仪测量正常受试者双眼AL、最小角膜屈光力径线上角膜曲率(keratometry for the flattest meridian,Kf)、最大角膜屈光力径线上角膜曲率(keratometry for the steepest meridian,Ks)、平均角膜曲率(mean keratometry,Km)、WTW,重点评价StarEyes 900眼科生物测量仪的可靠性、精确性并评估2种仪器的差异性。
Table 1 Differences and correlations of various biological parameters measured by StarEyes 900 and IOLMaster 500
2.2 StarEyes 900与IOLMaster 500的一致性
StarEyes 900与IOLMaster 500测量AL、Kf、Ks、Km和WTW分别有11%(7/62)、13%(8/62)、10%(6/62)、11%(7/62)、8%(5/62)的点位于95%的一致性界限(limits of agreement,LoA)以外。2种仪器所测AL、Kf、Ks、Km和WTW结果上下限绝对值的最大差值分别为0.19 mm、1.16 D、1.31 D、0.95 D、0.10 mm(图1)。
图1 StarEyes 900与IOLMaster 500测量的Bland-Altman一致性分析结果图 Figure 1 Bland-Altman plot of ocular measurements with StarEyes 900 and IOLMaster 500 (A)StarEyes 900和IOLMaster 500测量的AL的一致性分析;(B) StarEyes 900与IOLMaster 500测量Kf的一致性分析;(C)StarEyes 900与IOLMaster 500测量Ks的一致性分析;(D)StarEyes 900与IOLMaster 500测量Km的一致性分析;(E)StarEyes 900和IOLMaster 500测量WTW的一致性分析。实线表示差值的均值(x);虚线代表95%的一致性界限(x±SD)。 (A) Bland-Altman plot of AL with StarEyes 900 and IOLMaster 500; (B) Bland-Altman plot of Kf with StarEyes 900 and IOLMaster 500; (C)Bland-Altman plot of Ks with StarEyes 900 and IOLMaster 500; (D) Bland-Altman plot of Km with StarEyes 900 and IOLMaster 500; (E)Bland-Altman plot of WTW with StarEyes 900 and IOLMaster 500. Solid lines show the mean of differences and the dotted lines mean 95% limits of agreement (x±SD).
2. 广东省重点领域研发计划项目(2018B010109008)。This work was supported by the Youth Program of the National Natural Science Foundation (81800810) and the Research and Development Program in Key Areas of Guangdong Province (2018B010109008), China.
3. 国家自然科学基金青年项目 (81800810);广东省重点领域研发计划项目 (2018B010109008)。This work was supported by the Youth Program of the National Natural Science Foundation (81800810) and the Research and Development Program in Key Areas of Guangdong Province (2018B010109008), China.
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