In some cases, patients are considered to be candidates for laser refractive surgery but they have certain characteristics that are discovered in their eyes during the examination which indicate that PRK might be an equally good or perhaps even a better choice.
Scraping
the epithelium
|
The stroma is now exposed and ready
for laser treatment
|
The excimer laser is applied to reshape
the cornea
|
Contact lenses are put to cover
the cornea
|
What is PRK ?
PRK was the original laser refractive surgery. and at one time was the most common available. It was introduced in the 1980's and even today it continues to demonstrate a high level of safety and effectiveness. PRK became less common by the end of the 1990's with the introduction of LASIK. Despite LASIK's shortened recovery time, PRK remains an option with its own set of advantages and may at times be suggested instead of LASIK.
When is PRK suggested? The surgeon will consider PRK in the following cases:
| - Patient has less than 8.00 D of near-sightedness but with a thin cornea |
| - A history of recurrent corneal erosion or corneal basement membrane dystrophy |
| - A history of dry eye that is difficult to treat |
| - Career opportunities, such as becoming a pilot |
| - A history of glaucoma, in which case a glaucoma specialist will be consulted |
Advantages of PRK
- Minimal temporary side effects
- No injections, no sutures. Only numbing eyedrops
- Patient can return home immediately after surgery
PRK and the Improvement of Your Quality of Life
- PRK can eliminate risks associated with long term contact lens wear.
- PRK can make you more eligible for certain professions.
- PRK can increase convenience in everyday life.
- PRK can allow more freedom in many activities, especially water and outdoor sports.
- PRK can improve your self-confidence |
The Eyes and Refractive Errors 
