Al-Mezaine Hani S, Al-Amro Saleh A, Kangave Dustan, Sadaawy Abdulkareem, Wehaib Taher A, Al-Obeidan Saleh
Department of Ophthalmology, College of Medicine, King Saud University, PO Box 230387, Riyadh, 11321, Saudi Arabia.
Int Ophthalmol. 2008 Oct;28(5):333-8. doi: 10.1007/s10792-007-9143-9. Epub 2007 Sep 26.
To compare the accuracy of central corneal thickness (CCT) measurements by the oculus pentacam scheimpflug system, with those obtained with the DGH ultrasound pachymeter (UP) and to assess the agreement between the two devices.
In a prospective study, measurement agreement was assessed in 984 eyes of 492 healthy subjects using both oculus pentacam and ultrasonic pachymetry at the Eye Consultants Center, Riyadh, Saudi Arabia.
In the measurement agreement experiment, the mean CCT was 552.4 +/- 37.0 microm with oculus pentacam and 544.1 +/- 35.4 microm with ultrasonic pachymetry. Regression analysis showed a high correlation between the values obtained with both devices (r = 0.912, P < 0.001). Compared with UP, pentacam overestimated the CCT by a mean of 8.2 microm as demonstrated in a Bland-Altman plot.
the CCT measurements by the pentacam and UP are highly correlated. The pentacam agrees well with UP and is a reliable alternative to UP in CCT measurements.
比较oculus pentacam眼前节分析系统测量中央角膜厚度（CCT）的准确性与DGH超声角膜测厚仪（UP）的测量结果，并评估这两种设备之间的一致性。
在沙特阿拉伯利雅得眼科咨询中心进行的一项前瞻性研究中，对492名健康受试者的984只眼睛同时使用oculus pentacam和超声测厚法评估测量一致性。
在测量一致性实验中，oculus pentacam测量的平均CCT为552.4±37.0微米，超声测厚法测量的平均CCT为544.1±35.4微米。回归分析显示，两种设备获得的值之间具有高度相关性（r = 0.912，P < 0.001）。如Bland-Altman图所示，与UP相比，pentacam测量的CCT平均高估了8.2微米。
pentacam和UP测量的CCT高度相关。pentacam与UP一致性良好，是CCT测量中UP的可靠替代方法。
