Refractive surgery is an elective procedure

(in most cases), eye problems very often (also known as refractive errors) as correct myopia (nearsightedness), hyperopia (farsightedness) and astigmatism (distorted vision). Although there are many techniques performed today to correct a refractive error, laser refractive correction is quickly available to the most technologically advanced vision correction today. Eye doctors say that it allows an unprecedented level of precision and predictability.

The Food and Drug Administration (FDA) has a so-called excimer laser in October 1995 for correcting mild to moderate myopia approved. When the laser was approved, it was only for the limited use of practitioners trained both in laser refractive surgery and calibration and operation of the laser. Excimer lasers are approved for use in LASIK (laser assisted in situ keratomileusis) and PRK (PRK).

PRK, and Vision for the Future

PRK is an outpatient procedure is performed usually with local anesthetic eye drops. This operation forms the cornea by removing microscopic amounts of tissue from the outer surface with a cool, computer-controlled ultraviolet beam of light. The procedure takes only minutes, and patients are usually in their normal routine within 1-3 days.

According to the FDA Center for Devices and Radiological Health, have shown clinical studies that about 5 percent of patients still need glasses for distance vision after PRK and continued up to 15 percent needed glasses occasionally, such as driving a car. Some patients experience glare and halos around lights, but these conditions usually decrease or disappear in most patients after six months.

LASIK and its benefits

LASIK is actually far more complex than the PRK procedure and for all degrees of myopia is carried out. A knife called a microkeratome is used to cut the flap of corneal tissue and the surgeon then removes the targeted tissue below the flap with laser then replaced. For LASIK, it is crucial that you are an experienced surgeon who performed the operation to find thousands of times.

benefits of LASIK are:

• A suitable method is to correct the worst errors of refraction.

· faster recovery after LASIK that

PRK

· LASIK patients see well enough to go immediately and have good vision in the week

Refractive Surgery