What is PRK (Photorefractive Keratectomy)?
PRK, also known as Photorefractive Keratectomy, is a laser vision correction procedure used to improve vision, as well as reduce or eliminate the need for glasses or contacts. This procedure uses the excimer laser to reshape the curvature of the eye to correct nearsightedness, farsightedness and astigmatism.
The PRK Procedure
- A detailed map of your eye’s surface created by a computer is used to calibrate the excimer laser to your prescription.
- An eyelid holder is used to hold your eye open during the procedure.
- Anesthetic drops are applied to the eye.
- The surgeon removes the thin, protective surface layer (epithelium) from the cornea. This layer is about the size of a human hair.
- Computer-controlled pulses of cool laser light are applied to the inner layers of your cornea. As the laser pulses, it makes a ticking sound. The inner corneal layer is reshaped with the laser to mimic your contact lens or glasses prescription.
- To protect your eye while it heals and the epithelium layer, the surgeon gently places a clear, bandage contact lens on the cornea. As it takes just a few days for the epithelium to regenerate, the bandage contact lens is usually removed by the surgeon on the second or third post-operative visit.
- Some patients may feel slight irritation for a few days. Medication may be prescribed to minimize any discomfort.
- The surgeon will prescribe antibiotic and anti-inflammatory eye drops for the patient to use for approximately two months to assist in the healing process.
The PRK procedure is often only performed on one eye at a time.
Custom PRK
Today, new “wavefront” technology provides additional information to the surgeon and transmits this information to the laser. This new technology creates a three-dimensional ‘map’ of the eye, providing a precise measurement of the eye, much like a ‘fingerprint’ of your vision. This information permits the correction of higher order aberrations (HOA’s) or imperfections that could not even be identified previously. Now, these imperfections can be identified and treated. This results in better, crisper vision for many patients.
Selecting a Center and a Surgeon
It is extremely important to trust your surgeon, your laser center, and the doctor who will do your pre-operative testing and provide your post-operative care. Your questions should be answered in a straightforward manner, taking into account your individual needs. Look for real, proven experience -- since the experience and skill of the surgeon is critical. In fact, studies show a direct correlation between the doctor's experience level and the rate of complications.
A thorough, experienced surgeon, Dr. Scott is committed to providing you with the highest safety, ultimate comfort, and outstanding vision. Everyone in her practice knows the decision to have laser vision correction surgery is a big one; therefore, we take great care to determine what’s best for you as our patient.
Are You a Candidate?
If you are at least 18 years of age, have good eye health with no diseases such as cataracts or glaucoma, and are in good overall health, you may be a candidate. To determine your candidacy, you must undergo a thorough eye exam with your licensed optometrist or ophthalmologist. It is also essential that the doctor discuss your expectations for the procedure and your lifestyle. Although PRK has successfully eliminated or reduced the need for glasses or contact lenses for many people, it is not for everyone.
Free Laser Vision Consultations
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