PRK Eye Surgery
The PRK eye surgery (PhotoKeratectomy) is a type of refractive eye surgery similar to LASIK eye surgery. In PRK the Excimer laser is used to reshape the cornea. Unlike LASIK eye surgery, PRK does not require cutting the corneal flap. This refractive correction is performed directly on the cornea after removing the central epithelium. PRK is indicated for small myopia or thin or irregular corneas.
Refractive Eye Surgeries: PRK, LASIK, SMILE
All surgical techniques that correct visual defects are called refractive eye surgery. Conferring to each patient’s visual condition and indeed some other factors the ophthalmologist will opt for a type of refractive eye surgery.
Visual defects that can be treated by a type of refractive eye surgery:
- Myopia: or Nearsightedness is a visual defect manifested by a blurred vision from afar while near vision remains clear,
- Hyperopia: or hyperopia is a visual defect which manifests itself in near vision, with difficulties in focusing, which is supplemented secondarily by difficulties in far vision,
- Astigmatism: visual defect causing difficulty in near vision and far vision,
- Presbyopia: visual defect typically affecting near vision, occurring in the mid-forties.
The choice between the different eye surgeries available is guided by the result of the preoperative examinations; your age, your professional activities, your hobbies. Your ophthalmologist will explain the potential benefits and risks of each technique available to you and will choose, the surgery that best suits your eye care.
PRK Eye Surgery: The operation day
Before any PRK, the patient is administered a few anesthetic eye drops in order to no longer feel any sensitivity in the cornea. The operation is therefore performed under local anesthesia, except in special cases or a specific request.
Advantages of a PRK eye surgery
- Simplicity: PRK does not require cutting the corneal flap unlike Lasik or SMILE,
- Safety: the PRK is considered statistically the safest of the 3 methods ( due to the absence of flap problem, reduction of postoperative dryness problems)
- Efficacy: the visual results of PRK are the same as those of LASIK or SMILE for myopia of less than 6.00 diopters and hyperopia of less than 3.00 diopters.
Disadvantages of a PRK eye surgery
The PKR gives results as good as those of LASIK in the long term but at the cost of a certain number of disadvantages.
Provided that the recovery is longer and less comfortable than in LASIK, when possible, many ophthalmologists normally opt for other surgeries. Gradual abandonment by some ophthalmologists.