Dehnavi Zahra, Khabazkhoob Mehdi, Mirzajani Ali, Jabbarvand Mahmood, Yekta Abbasali, Jafarzadehpur Ebrahim
Department of Optometry, Iran University of Medical Sciences, Tehran, Iran.
Department of Epidemiology, Faculty of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Middle East Afr J Ophthalmol. 2015 Apr-Jun;22(2):233-7. doi: 10.4103/0974-9233.151884.
The aim was to compare the corneal curvature and power measured with a corneal topographer, Scheimpflug camera, optical biometer, and Javal keratometer.
A total of 76 myopic individuals who were candidates for photorefractive keratectomy were selected in a cross-sectional study. Manual keratometry (Javal Schiotz type; Haag-Streit AG, Koeniz, Switzerland), automated keratometry (IOL Master version 3.02, Carl Zeiss Meditec, Jena, Germany), topography (TMS4, Tomey, Erlangen, Germany), and Pentacam HR (Oculus, Wetzlar, Germany) were performed for all participants. The 95% limits of agreement (LOAs) were reported to evaluate the agreement between devices.
The mean corneal power measurements were 44.3 ± 1.59, 44.25 ± 1.59, 43.68 ± 1.44, and 44.31 ± 1.61 D with a Javal keratometer, TMS4-topographer, the Pentacam and IOL Master respectively. Only the IOL Master showed no significant difference with Javal keratometer in measuring the corneal power (P = 0.965). The correlations of the Javal keratometer with TMS4-topography, Pentacam, and IOL Master was 0.991. 0.982, and 0.993 respectively. The 95% LOAs of the Javal keratometer with TMS4-topography, Pentacam, and IOL Master were - 0.361 to 0.49, -0.01 to 1.14, and - 0.36 to 0.36 D, respectively.
Although the correlation of Pentacam, TMS4-topography, IOL Master, and Javal keratometer in measuring keratometry was high, only the IOL Master showed no significant difference with the Javal keratometer. The IOL Master had the best agreement with Javal keratometry.
比较角膜地形图仪、眼前节分析系统、光学相干生物测量仪和贾瓦尔角膜曲率计测量的角膜曲率和屈光力。
在一项横断面研究中，共选取了76名适合进行准分子激光原位角膜磨镶术的近视患者。对所有参与者进行了手动角膜曲率测量（贾瓦尔·席奥茨型； Haag-Streit AG，瑞士科尼茨）、自动角膜曲率测量（IOL Master 3.02版，卡尔·蔡司医疗技术公司，德国耶拿）、角膜地形图测量（TMS4，多美公司，德国埃尔兰根）和Pentacam HR（欧科路公司，德国韦茨拉尔）。报告了95%一致性界限（LOA）以评估不同设备之间的一致性。
使用贾瓦尔角膜曲率计、TMS4角膜地形图仪、Pentacam和IOL Master测量的平均角膜屈光力分别为44.3±1.59、44.25±1.59、43.68±1.44和44.31±1.61 D。只有IOL Master在测量角膜屈光力方面与贾瓦尔角膜曲率计无显著差异（P = 0.965）。贾瓦尔角膜曲率计与TMS4角膜地形图、Pentacam和IOL Master的相关性分别为0.991、0.982和0.993。贾瓦尔角膜曲率计与TMS4角膜地形图、Pentacam和IOL Master的95% LOA分别为-0.361至0.49、-0.01至1.14和-0.36至0.36 D。
虽然Pentacam、TMS4角膜地形图、IOL Master和贾瓦尔角膜曲率计在测量角膜曲率方面的相关性较高，但只有IOL Master与贾瓦尔角膜曲率计无显著差异。IOL Master与贾瓦尔角膜曲率测量的一致性最佳。
