Quick: The actual surgery is very fast, often taking less than 5 minutes. However the measurements of the cornea to accurately perform radial keratotomy (rk) should take some time, up to 20-30 minutes to check corneal shape and thickness at various points on the eye surface. Rk has fallen out of favor and has been replaced in most cases with prk using the laser, or lasik.
Answered 2/14/2012
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