Flattened RK Cornea

Before LASIK, there was RK, and RK was believed to be safe and effective, just like LASIK. Over one million RKs were done in the USA. Unfortunately, RK corneas tend to develop what is termed "hyperopic drift," which is a progressive flattening of the central cornea over time.

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"People who say it can't be done
shouldn't interrupt the guy doing it."
-- Roger D. Davis, PhD