Millions of people each year opt to go under the knife to ditch their glasses and contact lenses. But as with every type of surgery, Photorefractive Keratectomy, or PRK, laser eye surgery presents a host possible complications that can arise after the procedure. From under-correction to persistent dryness to more serious complications, it is important to be aware of the risks of PRK laser eye surgery before deciding to go through with the procedure.
What is PRK Laser Eye Surgery?
Similar to LASIK surgery, PRK attempts to correct vision problems such as myopia and astigmatism through using a laser to reshape the eye's cornea. It is currently the second most-used laser treatment to correct vision problems. Though the two surgeries are relatively similar, their dissimilarities come in how the procedure is carried out. By using an Excimer laser, the doctor removes the outer layer of the cornea, known as the epithelium, to reshape this portion of the eye and fix vision problems. Patients are then required to wear bandage contact lenses over their eyes for several weeks to ensure that the epithelium has a chance to heal and regenerate.
How is it different from LASIK?
Rather than simply pushing the epithelium back, using a laser to reshape the cornea and then pulling the epithelium back over the eye as in LASIK surgery, PRK removes this portion of the eye completely. In addition, PRK is often used in patients who have thin corneas or larger pupils and is a possible alternative for those who do not qualify for LASIK surgery because of specific eye conditions. In addition, PRK's recovery time is considerably longer than LASIK's, and patients typically don't see the instant clarity of vision they would see in the days following LASIK surgery.
Pain
Though not necessarily a complication, it is important to understand that there might be slightly more discomfort and pain in the days following a PRK procedure. This is due not only to the sensitive nature of the procedure, but because the entire epithelium must regenerate itself. Therefore, it is essential that patients consult their doctor about post-operation care and take precautions to protect their eyes from any unnecessary stress.
Under -orrection and astigmatism
One possible complication that can arise after a PRK procedure is under-correction. This is when not enough or too much tissue has been taken off the cornea. Though this condition can be rectified, it will entail more surgeries once the eye has healed. Another possible issue that can arise is the development of an astigmatism if the tissue is removed unevenly. This can also be corrected with further surgery.
Distorted Vision
Distorted vision is another possible complication that can affect post-operative patients. The appearance of halos, night glare and double vision can all affect patients after PRK. Subtle vision distortions can be corrected with eye drops, while others will require further surgery.
Other Complications
As with all laser eye procedures, there is a risk of infection and scarring. The possibility of developing infection can be curbed through being mindful of post-operation protocol and contacting your doctor if you begin experiencing anything out of the ordinary.
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