Comparison of automated and conventional keratometers

Clinical trials in 275 eyes indicated that an automated keratometer (Canon) was equal to or better than a conventional keratometer (Bausch & Lomb). Comparisons of the values obtained with the two instruments showed agreement on the radius of curvature. The automated keratometer detected small differences in directional axis in slightly astigmatic eyes. Because this instrument is quick and simple to operate, it should be widely used, particularly for examining children.