Ophthalmologist and laser eye surgery specialist Dr. Joshua Hann is skilled in performing PTK (phototherapeutic keratectomy) for patients with specific diseases or injuries to the cornea.

Although similar to PRK and LASIK, PTK is not a vision correction technique. However, by restoring clarity to damaged corneas, this minimally-invasive procedure can indirectly have a positive effect on a patient’s quality of vision.

Reversing Corneal Damage

PTK uses an excimer laser to remove a thin layer of corneal cells, therefore eliminating damaged or uneven tissue. Conditions that respond well to this approach include recurrent epithelial erosion syndrome (REES), corneal scars, granular dystrophy and irregularities on the corneal surface.

REES causes a breakdown of the surface of the cornea. This happens when the outer layer of the cornea, known as the epithelium, gradually wears away, blisters or suffers an abrasion or injury. Patients may experience eye pain, soreness, redness, light sensitivity, blurred vision, tearing or a feeling of having something in the eye.

In the case of scars, PTK can be an effective solution when the scar is located at the front of the cornea. Shallow scars respond best to the procedure; deeper scars can be improved but not completely eliminated. For corneas with an uneven surface, PTK can eliminate bumps and ridges  to restore a smooth optical surface.

The Procedure

In each of these instances, the idea is the same: remove the corneal surface layer so that it will regenerate a healthier epithelium, free from damage and irregularities. This is done with a technique that is similar to PRK vision correction surgery.

During a PRK procedure, a surface layer of corneal cells is removed to allow access to the foundational layer of the cornea, which is then reshaped. Removal is accomplished with the application of an alcohol-based solution followed by use of the surgical laser. The surface corneal cells grow back within a few days.

With LASIK, a surgeon accesses this delicate area by using the laser to make a microscopic incision in the cornea to create a flap, which is moved aside. After the reshaping of the cornea, the flap is moved back into position.

PTK, PRK and LASIK are all performed as outpatient procedures. Each takes less than half an hour and uses local anesthetic, although additional sedation may be provided on request.

Like PRK and LASIK, PTK offers lasting results, and has a proven track record of success and satisfaction. In Australia, the procedure has been performed for more than two decades. Research shows that patients with recurrent epithelial erosion syndrome experience a success rate of more than 90 percent. More than one procedure may be required for some of patients.

To learn more about the benefits of PTK, we invite you to schedule an appointment with laser eye surgeon Dr Hann. Please use our contact form or call Eastside Eye Specialist Care at (07) 3153 1000 today.