What Is PRK Eye Surgery?
PRK, or photorefractive keratectomy, is a type of refractive eye surgery that uses an excimer laser to reshape the cornea, the clear front surface of the eye.
The cornea plays an important role in focusing light onto the retina. When the shape of the eye causes light to focus incorrectly, refractive errors such as myopia, hyperopia, and astigmatism can occur. PRK changes the shape of the cornea so that light focuses more accurately, potentially providing clearer vision with less dependence on corrective lenses.
PRK has been used for decades and actually predates LASIK. While both procedures use laser technology to reshape the cornea, they differ in how the surgeon reaches the underlying corneal tissue.