Custom PRK improves vision more than custom Lasik for myopia, a study reports

Custom PRK improves vision more than custom Lasik for myopia, a study reports

Wavefront-guided PRK proved more effective than custom Lasik in correcting moderate myopia (near-sightedness), according to a study reported by the Ocular Surgery News website in December 2009.

The prospective clinical trial included 88 eyes of 44 patients with moderate myopia who underwent PRK in one eye and Lasik in the contralateral eye. PRK eyes and Lasik eyes had similar clinical characteristics before laser eye surgery.

A total of 42 patients completed one year of follow-up. Study data showed excellent vision in 74% of PRK eyes and 64 per cent of Lasik eyes at one year after surgery.

PRK eyes attained better vision without glasses (uncorrected visual acuity) and best corrected visual acuity than Lasik eyes; the differences were statistically significant (P = .03 and P < .001, respectively). Both groups had similar spherical equivalent, according to the study.

PRK eyes showed no clinically significant haze. Lasik eyes had greater higher-order aberrations and lower contrast sensitivity than PRK eyes. The differences were statistically significant, the study authors reported.

Source: British Journal of Ophthalmology. 2009;93(12):1634-1638.

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