Special procedures have been designed for each condition to reduce or even eliminate the need for glasses. Patients over 40 years old who have refractive surgery may still need to wear glasses for reading or close work. Refractive surgery is performed on an outpatient basis and most people return to work within one to three days. In order for you to fully understand the options available, it's important to know how the eye works. The normal eye functions much like a camera.
Light passes first through the cornea , pupil , lens and then focuses on the retina .
Occurs when the cornea is too steep or the eye is too long. Nearsighted eyes have too much focusing power which causes light to focus in front of the retina, resulting in blurred distance vision. Occurs when the cornea is too flat, the length of the eye too short, or a combination of the two. The focusing system of farsighted eyes is too weak, which causes light to focus behind the retina. This results in blurred close vision, but in some cases, distance vision can be blurred too.