PRK (photorefractive keratectomy) is a method that just a decade ago served as the main method of laser vision correction in patients with refractive errors. But not much time passed, and the “palm” was taken over by a more perfect and safer method of laser vision correction – LASIK.
Both technologies were developed for excimer laser vision correction, but they have significant differences that you should be aware of when planning aCataract Surgery. So, LASIK will improve vision much faster and cause less postoperative discomfort, with the need for short-term use of eye drops during the recovery period. After PRK surgery, the restoration of vision is much slower (healing can take several days or even months), but this method is more preferable in the case when the patient’s cornea is not thick enough or the pupils of his eyes are too wide. You can check the entire guidelines at kraffeye.com. In addition, the cost of LASIK surgery is higher in comparison with PRK, which is crucial in some situations.
Photorefractive keratectomy, like other methods of laser vision correction, is performed using an excimer laser. Such lasers selectively and ultra-precisely, under computer control, remove the tissues of the corneal surface by means of an ultraviolet (cold) beam, in a predetermined manner changing its optical power. After such a reprofiling of the cornea, the focusing of visible images on the retina is improved, and a person can forget about the refractive error (myopia, hyperopia, astigmatism).
Postoperative, recovery in PRk surgery
In PRK surgery, recovery is slower than in LASIK. After the first few hours of surgery it is normal to experience pain, blurred vision and intolerance to light. Pain in the postoperative period of PRK surgery can be controlled with the use of analgesics.
In the 48 hours after surgery, there is already good visual acuity, and the patient can resume part of his usual activities.
In PRK surgery the recovery time is on average one week, but it can be longer. It should be noted that this recovery period only concerns convalescence and the visual recovery is considerably higher. Visual recovery is considered to improve visual acuity (see better).
In PRK refractive surgery, the visual recovery time is high, usually between 2 to 3 months.