Our Procedures : PRK

PRK
Photo-Refractive Keratectomy (PRK) combines state-of-the-art computer technology with advanced laser precision.

The Procedure Utilizing the accuracy and precision of a laser, PRK changes the shape of the cornea to improve the way light is focused or "refracted" by the eye. Ultraviolet light and high energy pulses, lasting only a billionth of a second, disrupt the molecular bonds between the corneal cells which has an accuracy up to 0.25 microns. The excimer laser is unique in that it emits a 'cool' or non-thermal light beam. This makes it ideal for corneal surgery by eliminating the possibility of thermal damage to the surrounding tissue. Because no incisions are made, PRK does not weaken the structure of the cornea.

PRK is performed as an outpatient procedure in the comfort and convenience of an excimer surgical suite. The laser actually reshapes the cornea in less than 60 seconds and the entire procedure takes less than 30 minutes. After your eye has been completely numbed using "eye drop" anesthesia, a speculum will be placed in your eye to prevent you from blinking. Patients report some discomfort after the procedure until the outer portion of the cornea (epithelium) heals, usually within 48 to 72 hours. Some patients see a dramatic improvement in their vision within the first day. For others, vision may be blurry and may fluctuate for several weeks to several months. Most patients return to normal activities in 1-3 days.

How it Works
To treat nearsightedness, the cornea is made flatter. This is accomplished by removing tissue from the center of the cornea. To treat astigmatism, the cornea must be made more spherical. By changing the pattern of the beam, tissue is removed primarily in one direction.