Author's reply.

This article focuses on author's reply on comments by optometrists B.C. Reeves and A.R. Hill at the Oxford Eye Hospital in Oxford, England, regarding his research paper on optometry. He says that Reeves is misled in believing that the coefficient of repeatability directly gives a value for a significant change in score. This is only strictly true when used with continuous data. When used with quasi-continuous data, the value for a significant change in score is more accurately recorded as one increment above the coefficient of repeatability.