2012年7月26日 星期四

Nearsightedness (Myopia) - Surgery

Several types of surgery for nearsightedness (myopia) can change the shape of the cornea and refocus light directly on the retina . But surgery cannot correct pathological myopia.
The goal of surgery is to allow people who are nearsighted to see clearly without corrective lenses or to be less dependent on corrective lenses.

Most doctors consider
20/40 vision or better after surgery a satisfactory result. People with 20/40 vision or better are allowed to drive a car without corrective lenses. Overall, most people who have surgery achieve 20/40 vision or better after surgery.

Laser surgeries include:
LASIK
(laser in-situ keratomileusis), which is currently the most commonly used corrective surgery for nearsightedness. LASIK has a high success rate and low complication rate for low to moderate nearsightedness. It may also be used to correct more severe nearsightedness. In general, it requires less healing time, is less painful, and offers a faster visual recovery than photorefractive keratectomy (PRK).

PRK (photorefractive keratectomy), LASEK (laser epithelial keratomileusis), and epi-LASIK (epithelial laser in-situ keratomileusis), which are similar surgeries. They are another type of corrective surgery for nearsightedness that is used frequently. Like LASIK, these surgeries have high success rates and low complication rates for low to moderate nearsightedness. They may be used instead of radial keratotomy (RK) to correct severe myopia.

It is not intended as medical advice to any specific person. If you have any need for personal advice or have any questions regarding your health, please consult your Ophthalmologist for diagnosis and treatment.