Radial Keratomy (RK)

Recently, I had a couple of patients who had gone through radial keratotomy (RK) over 20 years ago. These patients are sometimes challenging to correct with glasses. For one, their prescription could vary during the course of the day. Secondly, they sometimes have a very high farsighted prescription where they were usually nearsighted before the surgery. This leads to problems of distortion and magnification. This is especially true when the patient's two eyes have a different prescription.