PRK (Photorefractive Keratectomy)
PRK (photorefractive keratectomy) is a type of laser eye surgery intended to correct myopia (nearsightedness), hyperopia (farsightedness) and astigmatism, reducing dependency on glasses or contact lenses.
With PRK, the corneal epithelium is removed and discarded, allowing the cells to regenerate after the surgery. The procedure is distinct from LASIK (laser-assisted in-situ keratomileusis), a form of laser eye surgery where a permanent flap is created in the deeper layers of the cornea.
PRK was the first vision procedure performed using the Excimer laser, and is still widely practiced today. It remains the procedure of choice for patients whose corneas are too thin to have LASIK.
Side-by-side Vision Correction Surgery Comparison Chart
There are a number of basic criteria which a person should satisfy:
- Normal ocular health
- Age 18 years or older
- Stable refraction error (no noticeable change in the last year) correctable to 20/40 or better
- Between −1.00 to −12.00 diopters of Myopia
- Not pregnant at the time of surgery
- Realistic expectations of the final results (with a complete understanding of the benefits, as well as the possible risks)
- Pupil size 6 mm or less in a dark room is ideal (but some newer lasers may be acceptable for larger pupils)
- Assessment of allergies, (e.g., pollen) where allergy may complicate the eyelid margins following surgery leading to dry eye.
There are also some pre-existing conditions that may complicate or preclude the treatment.
- Collagenvascular disease (e.g., corneal ulceration or melting)
- Ocular disease (e.g., dry eye, keratoconus, glaucoma)
- Systemic disorders (e.g., diabetes, rheumatoid arthritis)
- History of side effects from steroids
- Granular corneal dystrophy type II
Contact our office to
Schedule a PRK Consultation
