Refractive Eye Surgery: LASIK AND PRK
Lasik and PRK
LASIK (laser-assisted in situ keratomileusis) is a safe, reliable and painless way to improve vision and reduce or eliminate the need to wear glasses or contact lenses. LASIK changes the way light is bent, or refracted, as it passes through the cornea so that it focuses properly on the retina and objects can be seen clearly.
Dr. Halfpenny uses only the greatest technology to perform this procedure, including Femtosecond flap creation and Wavefront analysis. Bladeless LASIK allows patients to have a laser generated flap, making a safer and more precise procedure. Custom LASIK provides an additional level of precise data about your vision requirements using wavefront technology.
The entire procedure takes only 15-30 minutes per eye, and patients are often ready to leave within an hour or two. The flap heals on its own within a few days with no need for stitches.
Photorefractive Keratectomy (PRK)
PRK is one of the safest and most time-tested laser vision correction procedures available. Before LASIK, PRK was the most common refractive surgery procedure. Like LASIK, it reshapes the cornea to improve vision. PRK is now used mainly for patients with large pupils or thin corneas.
The first step in PRK is to remove the epithelium, a thin layer protecting the cornea. Then the surgeon uses an excimer laser to vaporize a small amount from the top of the cornea. LASIK, by contrast, cuts a deep flap in the cornea using a sharp microkeratome blade. This weakens the cornea, makes it difficult to replace the flap in precisely the right place, and can cause other complications including flap irregularity, epithelial ingrowth and corneal ectasia. PRK avoids these risks.
Studies have shown that 90-95% of patients with a correction of up to -6.00 diopters achieve vision of 20/40 after PRK, and up to 70% achieve 20/20. Patients needing less correction generally achieve better results. The risks of PRK include infection, haze, slow healing, scarring, over- or under-correction of the visual condition, and development of astigmatism.
IntraLase® has redefined the world of LASIK vision correction. Also known as bladeless LASIK, the IntraLase® all-laser procedure eliminates the need for a metal blade during surgery, helping bring clear vision to many people who feel uneasy about going “under the knife” during LASIK.
The state-of-the-art IntraLase® technology replaces the microkeratome blade that has traditionally been used to cut the necessary corneal flap during laser vision correction procedures. Rather than creating the flap with a blade, IntraLase® uses laser energy to make a quick, painless incision. By replacing the hand-held blade with a computer-controlled laser, the risk of complications is virtually eliminated.
The Benefits of IntraLase®
Because of the low risk of complications and high level of precision it provides, bladeless LASIK treatment has become the standard of care among leading LASIK surgeons and ophthalmic teaching institutions worldwide.
Compared to methods that use a microkeratome blade, this minimally invasive and incredibly precise procedure decreases the occurrence of partial flaps, holes in the flap, and other traumatic flap complications. Of the more than 500,000 IntraLase® procedures that have been performed globally to date, there have been no reports of any serious or sight-threatening complications.