The Differences between LASIK and PRK

Both LASIK and PRK are laser-based vision correction procedures that offer patients a high success rate and can be used to treat conditions including:

• Hyperopia (farsightedness)
• Myopia (nearsightedness)
• Astigmatism

Both procedures entail the use of an FDA-approved laser to reshape the surface of your cornea, and both are accompanied by similar results and risks. However, there are two key differences that separate LASIK and PRK: the first is in the surgical approach, and the second regards candidacy for the vision correction surgeries.

In LASIK, a flap is cut in your epithelium—the surface layer of your eye—in order to access your cornea. After the cornea is treated, the flap is replaced.

In PRK, which stands for photo-refractive keratectomy, the entire epithelium is removed in order to access and reshape your cornea. The epithelial tissue will grow back and heal, although it typically takes PRK patients slightly longer to recover and experience the full results of the surgery.

Choosing the best procedure for you can be determined during an exam with an ophthalmologist. PRK can be beneficial for some patients who are not candidates for LASIK, including those who have thin corneas or corneal irregularities.

If you would like to learn more about whether you may be a candidate for LASIK or PRK, please contact an ophthalmologist near you.