PRK, photorefractive keratectomy

PRK, photorefractive keratectomy:

This was the first corneal laser surgery developed, and recent innovations have improved patient comfort during and after PRK. Results are similar to LASIK within three to six months post-surgery.

PRK may be recommended for original or retreatment surgery when the cornea is considered too thin for LASIK, when there are concerns about creating a corneal flap, or when the surgeon considers it safer and more effective for a particular patient for other reasons.

PRK can correct myopia, hyperopia and astigmatism.

The procedure: The difference from LASIK is that a corneal flap is not created, but instead the top, or epithelial, layer is removed (or moved aside) before treating the stromal layer with the excimer laser.

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SOURCES for Additional Useful and Reliable Information

The United States Food and Drug Administration. Center for Devices and Radiological Health. LASIK. http://www.fda.gov/cdrh/lasik

Ophthalmic Mutual Insurance Company. Informed Consent Guidelines.

www.omic.com

American Academy of Ophthalmology. www.aao.org

http://eyecareamerica.org/eyecare/treatment/lasik

American Academy of Ophthalmology. Patient Education. LASIK.
http://www.aao.org/practice_mgmt/patient_ed/

Eye Surgery Education Council, established by the American Society for Cataract and Refractive Surgery. LASIK.
http://www.eyesurgeryeducation.com/Lasik.html