|PRK is the original excimer laser treatment for refractive errors and is still one of the most effective and widely used procedures.
The potential for the excimer laser to interact with biological tissue was first recognised by an IBM scientist in 1983 who worked with eye surgeons to apply the concept to the cornea. The first human eye was treated in 1987 and Photorefractive Keratectomy (PRK) was born. With PRK only the front surface of the cornea is treated.
This technique involves removing the top layer of the cornea (the eptihelium) using a combination of laser and a diluted alcohol solution. An excimer laser is then applied to the exposed surface to sculpt the front surface of the eye. The patient does not feel any pain and they are not able to see any detail during the procedure. At the completion of the procedure the eye is covered with a contact lens which acts like a bandaid to provide comfort and protection during the healing process. This contact lens will stay on the eye for 1 week and will be removed by your surgeon at your check up.
In the first 2+ weeks after surgery, fluctuations in vision may be noted. As the corneal surface stabilises and the tear film normalises across the eye, this improves.