Photorefractive keratectomy, or PRK, is one of two main forms of laser eye treatment for people with specific problems. This operation is often associated with LASIK, mainly because they are similar to each other in that they are both aimed at fixing such problems. However, there are certain criteria that can help doctors choose which procedure is most suitable for a particular person.
PRK begins when the patient receives local anesthesia in the affected area. The eyelids are held by a tool that basically holds them and prevents them from blinking. Because of this, an assistant is on hand to re-steep it if necessary. In fact, the entire operation lasts only a few minutes. This form of laser treatment initially removes the outermost layer of the cornea before laser ablation of the next layer occurs.
There is little risk that the laser will make a mistake regarding ablation because it is connected to a computer that effectively tracks eye movements and makes precise corrections to each movement. Tracking depends on how new and fast the laser is, but even the oldest lasers are good enough.
The recovery period lasts from several months to a year, especially with regard to the halo effect or the sensitivity of glare. The general pain and pain that comes with the procedure basically goes away after a month or so. Pain and kraff eye medications are usually prescribed at the initial stage, but they should be discontinued after the pain stops. The problem of dry eyes can last longer, and in some cases it becomes permanent. They are one of the most common problems with this laser treatment.
Before choosing this form of treatment, doctors must evaluate and consider several factors. General health, age, stability of refraction, pupil size, and many others should be considered before surgery. The procedure to be completed will be the choice between LASIK and PRK.