眼前房容积的 Visante 光学相干断层扫描和 Pentacam 测量：重复性和一致性水平。

Anterior chamber volume measurements with Visante optical coherence tomography and Pentacam: repeatability and level of agreement.

机构信息

Department of Ophthalmology, Medical School of Democritus University of Thrace, Alexandroupolis, Greece.

出版信息

Clin Exp Ophthalmol. 2009 Nov;37(8):772-4. doi: 10.1111/j.1442-9071.2009.02132.x.

DOI:10.1111/j.1442-9071.2009.02132.x

PMID:19878221

Abstract

BACKGROUND

The purpose of this study is to examine the repeatability of Pentacam-derived anterior chamber volume measurements, and assess the level of agreement of anterior chamber volume measurements obtained with the Visante and the Pentacam imaging devices.

METHODS

Anterior chamber volume was calculated with the Pentacam device and the Visante using the Wang formula. Results were analysed by means of the Wilcoxon signed rank test, Bland-Altman analysis, Cronbach's alpha test and intraclass correlation coefficient. P-values <0.01 were considered statistically significant.

RESULTS

One randomly selected eye from each of 20 persons was analysed. Spherical equivalent ranged between -2.50 and +1.50 D, and their age ranged from 25 to 79 years (mean +/- SD: 54.4 +/- 19.2 years). Mean anterior chamber volume measured with Pentacam was 171.1 +/- 39.6 microL (minimum: 103.0 microL, maximum: 236.0 microL), and mean anterior chamber volume measured by Visante was 171.4 +/- 42.4 microL (minimum: 96.4 microL, maximum: 245.5 microL). There was no statistically significant difference between Pentacam and Visante measurements of the anterior chamber volume (P = 0.691, Wilcoxon signed rank test). Cronbach's alpha and intraclass correlation coefficient for Pentacam were 0.998 and 0.991, respectively.

CONCLUSIONS

Anterior chamber volume measurements obtained with the Visante using the Wang formula were in good agreement with the corresponding ones obtained with Pentacam. This recently described method is easy to perform and might contribute to both clinical and research settings.

摘要

背景

本研究旨在检验 Pentacam 测量前房容积的可重复性，并评估 Visante 和 Pentacam 成像设备测量前房容积的一致性水平。

方法

使用 Wang 公式计算 Pentacam 设备和 Visante 的前房容积。采用 Wilcoxon 符号秩检验、Bland-Altman 分析、Cronbach's alpha 检验和组内相关系数对结果进行分析。P 值<0.01 被认为具有统计学意义。

结果

分析了 20 人随机选择的每只眼睛。等效球镜度数在-2.50 至+1.50 D 之间，年龄在 25 至 79 岁之间（平均值±标准差：54.4±19.2 岁）。Pentacam 测量的平均前房容积为 171.1±39.6 μL（最小值：103.0 μL，最大值：236.0 μL），Visante 测量的平均前房容积为 171.4±42.4 μL（最小值：96.4 μL，最大值：245.5 μL）。Pentacam 和 Visante 测量的前房容积之间无统计学差异（P=0.691，Wilcoxon 符号秩检验）。Pentacam 的 Cronbach's alpha 和组内相关系数分别为 0.998 和 0.991。