PRK after LASIK
A photorefractive keratectomy (PRK) surgery can sometimes be the best way to provide a touch-up following a LASIK surgery if the patient is not a candidate for another LASIK procedure. PRK after LASIK performed by an expert surgeon at our Toronto, ON, practice can help you achieve and maintain freedom from glasses and contact lenses.
When LASIK Enhancement is Not an Option
Undercorrection, overcorrection, and the development of higher-order aberrations such as halos and glare are risks of LASIK that can be easily corrected by a qualified ophthalmologist. Meanwhile, it can be expected that even after LASIK, focus will gradually degrade with age. This is why we offer free enhancements to our patients for the rest of their lives, as needed.
During a LASIK procedure, your surgeon creates a flap in your cornea, pulls back the flap to expose the underlying corneal tissue, and then refines the cornea using an excimer laser. Similarly, A LASIK enhancement requires your surgeon to lift the flap created during the primary procedure in order to make corrections, and is most often performed two to three months after the first procedure.
However, LASIK is not always advisable when performing a touch-up. When lifting older flaps, the risk of epithelial ingrowth and other risks can be higher if, for example, the corneal tissue below the flap is too thin. A LASIK enhancement in this case could increase your chances of developing a progressive condition of the eye known as ectasia.
To determine whether you are a good candidate for a PRK enhancement, your surgeon will examine your corneas with the same methods used prior to your primary procedure.
PRK involves removing epithelial (outer corneal) tissue entirely before making the necessary refinements. The epithelium then regenerates relatively quickly following surgery. The risk of ectasia or keratoconus (an outward protrusion of the cornea) is significantly reduced with PRK enhancement, making it an excellent enhancement option for the right patient.
Rather than creating a corneal flap, PRK surgery involves removing the outer corneal layer (epithelium) completely in order to access the stroma, or center of the cornea.
Your safety and long-term satisfaction are our priorities. To determine whether you are a good candidate for a PRK enhancement, your surgeon will examine your corneas with the same methods used prior to your primary procedure. Your doctor will also determine whether you have enough corneal thickness for a second surgery, in addition to ruling out other possible sources of vision problems, such as cataract formation.
Contact Us to Learn More
Some patients may need an additional procedure before they can experience the full benefits of a refractive surgery. As with any surgery, LASIK involves risks, and we are committed to providing precisely the right treatment needed to help our patients achieve the greatest possible freedom from contact lenses and glasses. If you are experiencing glare or halos after having undergone LASIK, or if you find that your focus is otherwise diminished, we are here to help. Contact us today to learn more about how we can help you see your world in outstanding clarity.