During the procedure, a brush is used to remove the cornea’s outer covering, instead of creating a flap as is done with LASIK. Then, an excimer laser is used to gently reshape the next layer of tissue from the cornea’s surface, reshaping the cornea to achieve the desired correction. This remodeling of the cornea helps the eye to focus properly, thus reducing or eliminating the need for eyeglasses and contact lenses. A clear bandage contact lens is placed on your cornea for protection immediately afterward to maximize your comfort while the eye heals.
After PRK, a patient’s vision improves gradually. During the 24-48 hours after the treatment, most patients will experience a gritty sensation in the eye as well as some discomfort. Prescription eye drops are used for several months following the procedure. Typically the patient will notice improved vision 3-5 days following the treatment. Nearly all patients are able to return to work and most daily activities within 3-4 days.