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CK is a procedure that uses radio waves to steepen the cornea. This procedure usually takes less than five minutes and is used to treat presbyopia and farsightedness. Rather than using cutting to complete the procedure, CK utilizes radio waves and heat.
LASEK is a procedure that is fairly new. It is commonly used for people who have too thin of corneas to be suitable for LASIK. It was created to lessen the complications that may occur when the flap created by LASIK is not thick enough. The outer layer of the cornea is cut using a fine blade called a trephine.
LASIK is the most common of all laser eye surgeries. The procedure involves cutting the cornea with a microkeratome or the newly approved Intralase. Both nearsighted and farsighted people may be eligible for LASIK.