Evaluation of the EyeSys Model II Computerized Videokeratoscope. Part II: The Repeatability and Accuracy in Measuring Convex Aspheric Surfaces

Abstract

The accuracy of the EyeSys corneal analysis system (CAS) in measuring central and peripheral radius of curvature was shown to be dependent on the shape of the surface to be measured. For more rapidly flattening surfaces, a decrease in accuracy was found for both central and peripheral radius of curvature, which in clinical terms is thought acceptable.