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While more comfortable and yielding quicker rehabilitation of vision, LASIK is technically more difficult to perform than PRK and carries with it a slightly higher complication rate. This is because there is an extra step involved - the creation of the corneal flap. This is rarely associated with any considerable or permanent vision loss, however, there are occasional circumstances which could cause flap wrinkling, or incomplete flaps which could lead to vision difficulty, requiring further procedures.
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