Photorefractive Keratectomy (PRK)

What is Photorefractive Keratectomy (PRK)?

Photorefractive Keratectomy (PRK) is a type of laser eye surgery designed to correct refractive vision problems, including nearsightedness (myopia), farsightedness (hyperopia), and astigmatism. PRK works by reshaping the cornea with a laser to improve how light focuses on the retina, resulting in clearer vision. It is an alternative to LASIK and is particularly beneficial for individuals with thin corneas or dry eyes.

How is PRK Performed?

1. Preparation: The eye is numbed with anesthetic drops, and the outer layer of the cornea (epithelium) is gently removed.
2. Laser Reshaping: An excimer laser reshapes the underlying corneal tissue to correct refractive errors.
3. Healing: A protective contact lens is placed over the eye to promote healing and provide comfort.

The procedure takes about 10-15 minutes per eye, and the healing process is slightly longer than LASIK.

What to Expect During the Procedure

• PRK is performed as an outpatient procedure with local anesthesia.
• Patients may feel mild discomfort or sensitivity during the healing phase.
• Vision improves gradually over several days to weeks, with full stabilization occurring within a few months.
• Most patients achieve 20/20 vision or better after the procedure.

The Importance of PRK in Vision Correction

PRK is a safe and effective option for those who may not qualify for LASIK. It provides permanent correction for refractive errors without the need to create a corneal flap, making it a preferred choice for patients with thin or irregular corneas. PRK also reduces the risk of complications related to flap creation and offers long-term vision improvement.