PRK (Photoreactive Keratectomy)
PRK (photoreactive keratectomy) is a procedure in which a laser is used to reshape corneal tissue. PRK can be used to treat low to moderate myopia, hyperopia, and astigmatism.
Your surgeon uses a computer-guided excimer laser to reshape the cornea.
After laser treatment, you will wear a contact lens as a bandage for a few days. This protects the cornea as it heals.
What To Expect
Before treatment, you may be given medication to help you relax. Eye drops numb your eyes. A device is used to keep your eyes open. A small surgical tool or the laser is first used to remove the epithelium. Laser treatment lasts for 10 to 90 seconds. For a few days after the procedure, your vision may seem worse. It should begin to improve in about 5 days and become stable in about 6 months.
What You Should Consider
- No risk of flap complications
- Better for patients with thin corneas, previous glaucoma surgery, mild corneal scars, or other cornea problems
- Mild to moderate pain after surgery
- Longer vision recovery than LASIK
- May need to use eye drops for 3 months or longer
- Corneal scarring or haze
- Temporary or permanent dry eye
- Night vision problems, such as halos, glare, or starbursts
- Undercorrection or overcorrection
- Loss of best corrected vision