Spaeth G L, Azuara-Blanco A, Araujo S V, Augsburger J J
Glaucoma Service, Wills Eye Hospital, Thomas Jefferson University, Philadelphia, PA 19107, USA.
J Glaucoma. 1997 Feb;6(1):13-7.
To determine the intra- and interobserver agreement in assessing the configuration of the human anterior chamber angle using ultrasound biomicroscopy (UBM).
Two masked clinicians used ubm images to estimate, in 41 eyes, (a) the position of contact between the peripheral iris and the inside of the eye wall, (b) the angular size of the anterior chamber angle (ACA), and (c) the curvature of the peripheral iris. Both observers, masked to the previous results, examined the same images in a second session. Agreement was evaluated using the unweighted kappa statistic.
Intraobserver agreement in assessing the iris insertion, angular width, and the iris curvature was high (range of kappa values, 0.83-0.92). Interobserver agreement in evaluating the level of iris insertion (kappa = 0.79), the angular width (kappa = 0.95), and the iris curvature (kappa = 0.84) was also high.
The agreement within the same observer and between observers in evaluating the ACA configuration by UBM was excellent.
使用超声生物显微镜（UBM）确定评估人眼前房角结构时观察者内和观察者间的一致性。
两名不知情的临床医生使用UBM图像对41只眼睛进行评估，（a）周边虹膜与眼壁内侧的接触位置，（b）前房角（ACA）的角度大小，以及（c）周边虹膜的曲率。两名观察者在不知情先前结果的情况下，在第二个阶段检查相同的图像。使用未加权kappa统计量评估一致性。
观察者内评估虹膜附着、角度宽度和虹膜曲率的一致性较高（kappa值范围为0.83 - 0.92）。观察者间在评估虹膜附着水平（kappa = 0.79）、角度宽度（kappa = 0.95）和虹膜曲率（kappa = 0.84）方面的一致性也较高。
在通过UBM评估ACA结构时，同一观察者之间以及不同观察者之间的一致性非常好。
