Who should have prk (photorefractive keratectomy) over lasik?

Depends : Prk over lasik is utilized when the lasik was performed more than 3 years previous and the patients has a significant residual prescription limiting their uncorrected vision.

PRK vs LASIK: Both prk and lasik can be used to improve vision. Both are equally effective. However, some patients with specific corneal conditions are not candidates for lasik, but can be candidates for prk.

Lasik and PRK: Various diagnostic test should be done in order to see if a person is the right candidate for either lasik or prk. Depending on a person's corneal thickness and corneal shape, these should be taken into consideration when deciding which procedure to do.