Ghaffari Reza, Mahmoudzadeh Raziyeh, Mohammadi S Saeed, Salabati Mirataollah, Latifi Golshan, Ghassemi Hamed
Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran.
Optom Vis Sci. 2019 Oct;96(10):745-750. doi: 10.1097/OPX.0000000000001433.
The validity of measurements of OA-2000 (Tomey, Nagoya, Japan), a new swept-source optical coherence tomography-based biometer, was evaluated in comparison with IOLMaster 500 (Carl Zeiss Meditec AG, Jena, Germany) as a reference method for optical biometry in cataract patients.
This article compares the validity of measurements between OA-2000 and IOLMaster 500.
In this cross-sectional study, axial length, lens thickness, anterior chamber depth, and keratometry readings were obtained by the OA-2000 and IOLMaster 500. Two measurements were taken by each method. Patients in which any one of the biometry methods could not be performed owing to severity of the cataract were excluded from the study. Repeatability of measurements was presented by coefficient of variation, and Bland-Altman method was used for evaluating the agreement between the two biometers.
Fifty-eight eyes of 58 cataract patients with mean ± standard deviation age of 61.4 ± 8.3 years were included in this study. Intraclass correlation ranged from 0.898 to 0.901 and showed good to excellent reliability. It was good for keratometry 1 (0.898) and excellent for keratometry 2 (0.992), axial length (0.999), and anterior chamber depth (0.901). Bland-Altman analysis showed good agreement between the swept-source optical coherence tomography and partial coherence interferometry devices for axial length, anterior chamber depth, and mean keratometry, with narrow 95% limits of agreement (-0.09 to 0.1 mm, -0.33 to 0.54 mm, -0.97 to 1.03 D, respectively), and also indicated small mean difference (0.01 for axial length, 0.11 for anterior chamber depth, 0.03 for mean keratometry, respectively) for all comparisons.
OA-2000 as a new swept-source optical coherence tomography has an excellent repeatability for measurement of biometric data in cataract patients, comparing with the standard partial coherence interferometry biometer (IOLMaster 500).
将一种基于扫频源光学相干断层扫描技术的新型生物测量仪OA - 2000（日本名古屋多美公司）与IOLMaster 500（德国耶拿卡尔蔡司医疗技术公司）作为白内障患者光学生物测量的参考方法进行比较，评估OA - 2000测量的有效性。
本文比较OA - 2000和IOLMaster 500测量的有效性。
在这项横断面研究中，通过OA - 2000和IOLMaster 500获取眼轴长度、晶状体厚度、前房深度和角膜曲率读数。每种方法进行两次测量。因白内障严重程度导致任何一种生物测量方法无法进行的患者被排除在研究之外。测量的重复性用变异系数表示，采用Bland - Altman方法评估两种生物测量仪之间的一致性。
本研究纳入了58例白内障患者的58只眼，平均年龄±标准差为61.4±8.3岁。组内相关系数范围为0.898至0.901，显示出良好至优秀的可靠性。角膜曲率1的可靠性良好（0.898），角膜曲率2（0.992）、眼轴长度（0.999）和前房深度（0.901）的可靠性优秀。Bland - Altman分析显示，扫频源光学相干断层扫描设备和部分相干干涉测量设备在眼轴长度、前房深度和平均角膜曲率方面具有良好的一致性，一致性界限较窄（分别为-0.09至0.1毫米、-0.33至0.54毫米、-0.97至1.03 D），并且所有比较的平均差异均较小（眼轴长度为0.01，前房深度为0.11，平均角膜曲率为0.03）。
与标准的部分相干干涉测量生物测量仪（IOLMaster 500）相比，作为一种新型扫频源光学相干断层扫描技术的OA - 2000在测量白内障患者生物测量数据方面具有出色的重复性。
