Elbaz Uri, Barkana Yaniv, Gerber Yariv, Avni Isaac, Zadok David
Department of Ophthalmology, Assaf Harofeh Medical Center, Zerifin 70300, Tel Aviv, Israel.
Am J Ophthalmol. 2007 Jan;143(1):48-53. doi: 10.1016/j.ajo.2006.08.031. Epub 2006 Sep 29.
To compare measurements of anterior chamber depth (ACD) and corneal curvature obtained with the Pentacam to other commonly used devices.
Prospective, nonrandomized clinical trial.
Measurements of ACD and keratometry were prospectively obtained in 22 eyes of 11 subjects with the Pentacam compared with measurements of the ultrasound (US) A-scan and IOLMaster (ACD), and with those of automated keratometry (AK) and IOLMaster (keratometry) at the Assaf Harofeh Medical Center.
The mean interdevice differences in keratometry for Pentacam vs AK, Pentacam vs IOLMaster, and AK vs IOLMaster were -0.046 diopters, -0.471 diopters, and -0.424 diopters, respectively. Measurements of keratometry by the IOLMaster differed statistically significantly from those of Pentacam (P < .01) and AK (P < .01). For measurement of keratometry, 95% limits of agreement were -1.321 to 1.229 diopters for the Pentacam and AK, -1.478 to 0.536 diopters for the Pentacam and IOLMaster, and -1.026 to 0.178 diopters for the AK and IOLMaster. The mean interdevice differences in ACD for the Pentacam vs US, Pentacam vs IOLMaster, and US vs IOLMaster were 0.103, 0.099, and -0.004 mm, respectively. Measurements of ACD by the Pentacam differed statistically significantly from those of US (P < .05) and IOLMaster (P < .01). For measurement of ACD, 95% limits of agreement were -0.197 to 0.404 mm for the Pentacam and US, -0.169 to 0.367 mm for the Pentacam and IOLMaster, and -0.332 to 0.324 mm for the US and IOLMaster.
For some clinical applications, measurements of ACD and corneal curvature with the tested machines may differ greatly and therefore may not be interchangeable.
比较使用Pentacam获得的前房深度（ACD）和角膜曲率测量值与其他常用设备的测量值。
前瞻性、非随机临床试验。
在阿萨夫·哈罗费医疗中心，对11名受试者的22只眼睛进行前瞻性研究，使用Pentacam测量ACD和角膜曲率，并与超声（US）A超和IOLMaster（ACD）的测量值，以及自动角膜曲率计（AK）和IOLMaster（角膜曲率）的测量值进行比较。
Pentacam与AK、Pentacam与IOLMaster以及AK与IOLMaster之间角膜曲率测量的平均设备间差异分别为-0.046屈光度、-0.471屈光度和-0.424屈光度。IOLMaster测量的角膜曲率与Pentacam（P <.01）和AK（P <.01）的测量值在统计学上有显著差异。对于角膜曲率测量，Pentacam和AK的95%一致性界限为-1.321至1.229屈光度，Pentacam和IOLMaster为-1.478至0.536屈光度，AK和IOLMaster为-1.026至0.178屈光度。Pentacam与US、Pentacam与IOLMaster以及US与IOLMaster之间ACD测量的平均设备间差异分别为0.103、0.099和-0.004mm。Pentacam测量的ACD与US（P <.05）和IOLMaster（P <.01）的测量值在统计学上有显著差异。对于ACD测量，Pentacam和US的95%一致性界限为-0.197至0.404mm，Pentacam和IOLMaster为-0.169至0.367mm，US和IOLMaster为-0.332至0.324mm。
对于某些临床应用，使用测试机器测量ACD和角膜曲率可能有很大差异，因此可能不可互换。
