Refractive Outcome of Radial Keratotomy: Does the Result of the First Eye Predict Outcome in the Second Eye?

To present a method of quantifying variability in the outcome of a refractive surgical procedure using the SD of the difference between achieved and expected refractive changes. We used this method to determine whether the refractive outcome of radial keratotomy in a first eye is predictive of outcome in the second eye.