Table 1.

Repeatability of RTVue, Visante, and Slit-Lamp Adapted Ultrasonic Pachymetry in the Measurement of Central Corneal Thickness

CI, confidence interval; CV, coefficient of variation; ICC, intraclass correlation coefficient; Rco, repeatability coefficient; SL-US, slit-lamp adapted ultrasonic pachymetry; SD, standard deviation.

^*One-way analysis of variance was used to compute Rco. Each subject's standard deviation was not correlated with each subject's mean (p=0.400, 0.188, 0.540 for RTVue, Visante, SL-US, respectively, Kendall's tau correlation).

^†Average thickness of the central zone (2 mm diameter) was used. The corneal thickness was calculated by automated image processing software.