Surgeries for near-sightedness compared

Reported by Susan Aldridge, PhD, medical journalist

There is little to choose between the two main methods for correcting short sight with a laser.
LASIK (laser-assisted in-situ keratomileusis) and PRK (photorefractive keratectomy) both use a laser to resculpt the cornea and so correct shortsightedness. The two methods are now compared by doctors at Moorfields Eye Hospital, London, who conclude there is little to choose between the two approaches when it comes to restoring 20/20 vision.

However, LASIK patients have less pain after the procedure and a shorter recovery time. But PRK patients have less discomfort during the surgery itself. What is more, those opting for PRK are more likely to have some loss of visual acuity at six months after surgery. It's thought this is due to inflammation caused by the laser use with PRK. What these studies didn't address is the use of mitomycin C, an anti-scar drug which can be used to correct this problem. This review reveals useful information which doctors can use to advise patients who are considering laser treatment for shortsightedness.

Source
Cochrane Database of Systematic Reviews 2006 Issue 2

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