What Does Refractive Surgery Mean?
Refractive surgery is eye surgery that is performed to eliminate or reduce dependency on contact lenses or glasses, although some people still need prescription eye glasses or contacts after the procedure. It is used to improve the refractive state of the eye which improves natural vision. Refractive surgery can include a variety of methods of surgery that remodel or change the cornea. Excimer lasers are used most commonly to reshape the curvature of the cornea. Refractive surgery is a way to correct nearsightedness, farsightedness, and some types of astigmatism. The most widely performed type of refractive surgery is LASIK. Light rays enter the eye through the clear cornea, pupil and lens. These light rays are focused directly onto the retina, the light-sensitive tissue lining the back of the eye. The retina converts light rays into impulses, sent through the optic nerve to your brain where they are recognized as images. About 70% of the eye’s focusing power comes from the cornea and 30% from the lens. Many forms of refractive surgery improve vision by permanently changing the shape of the cornea, the clear front window of the eye. In Rapid City, Dr. Wright uses LASIK to improve the following conditions: