Does PRK Permanently Fix Vision? 

Posted by: Caster Eye Center in PRK Vision Correction

Many researching the details of laser vision correction often want to know if the results last. A skilled laser eye surgeon can help explain how PRK works, what affects healing, and why PRK results are often long-lasting for the right candidates. PRK can permanently reshape your cornea to correct current vision problems; however, it does not prevent your eyes from naturally changing over time. That distinction is important if you are considering this vision correction procedure. 

Understanding PRK

Photorefractive keratectomy, or PRK, is a laser vision correction procedure designed to treat refractive errors such as nearsightedness, farsightedness, and astigmatism. In many ways, it is similar to LASIK. They differ in that LASIK involves creating a flap in your cornea, while PRK removes a thin layer of your cornea, which grows back naturally. 

Vision problems occur when the shape of the eye prevents light from properly focusing on the retina. PRK changes the curvature of the cornea so light can focus more accurately, reducing your dependence on glasses or contact lenses. During the procedure, the outer layer of your cornea is gently removed before the laser reshapes the underlying tissue. A new outer layer is created during healing. PRK may be a valid option if you have thinner corneas, lead an active lifestyle, or engage in other activities that make flap-based surgery less favored. 

Is Correction Permanent?

In a technical sense, PRK does permanently change the shape of your cornea. However, permanent correction does not guarantee that vision will never change again. Your eyes are living structures that continuously change due to age, genetics, health conditions, or natural shifts in prescription. This is why stability in prescription is important. If vision is still changing, your eyes may continue shifting after PRK. 

Why Vision May Change After PRK

In some cases, patients have experienced slight regression after laser vision correction. This isn’t the rule for everyone, and when it does occur, it is often mild. Studies indicate that PRK is safe and effective for many years after treatment, especially in patients with lower degrees of nearsightedness. Not all vision changes may be related to PRK. Some conditions can cause changes to your eyes that affect your vision later in life. 

What to Expect

PRK has been proven to improve uncorrected vision. Some studies indicate that approximately 9 out of 10 people who undergo PRK achieve 20/40 vision or better without any external correction. Results often are contingent on prescription, eye health, healing response, and surgical planning. You should also keep in mind that PRK results take time. Vision usually blurs during the early stage of healing, and the surface of your eye needs time to adjust and regenerate. Many patients notice gradual improvement over the following weeks. The slower recovery is the primary difference between PRK and LASIK. 

Long-Term Vision with the Right Evaluation

PRK can be a long-term, effective option for patients seeking freedom from glasses or contacts. The procedure reshapes your cornea permanently, but your vision can still be influenced by factors such as aging, healing, eye health, and natural prescription changes. Your eye surgeon is your greatest resource, so choosing one who is qualified and experienced is of utmost importance. If something doesn’t feel right or you aren’t getting answers to your questions, this may be a red flag to get another opinion. With the right surgeon, you’ll have vision correction that lasts. 

Schedule a consultation with a laser eye surgeon to learn if PRK could help improve your vision.