LASIK surgery corrects vision with a laser in seconds. Pictured above is the Excimer laser used in LASIK surgery.

HowStuffWorks

One of the most common physical ailments that people suffer from is poor vision. The eye is a complicated organ that requires a very exact arrangement of components to function properly. If even one of these components is not precisely the correct shape, then light that falls on the eye will not be focused correctly.

For centuries, people have relied on external lenses to alter the angle of the light entering the eye. Whether in glasses or contact lenses, these appliances have proven invaluable in the correction of poor vision. While external lenses will remain popular for the foreseeable future, advances in technology have made it possible for surgeons to alter the shape of the eye itself.

There are several types of vision correction surgery. One of the most popular is LASIK, which stands for laser-assisted in-situ keratomileusis. In this article, you will find out exactly what happens during a LASIK procedure as you follow this author through his own eye surgery. You will learn what LASIK is, what is involved in the surgery, what equipment is used and how to know if you're a candidate for LASIK. You will also learn what the other forms of eye surgery are and how they differ from each other.

Before we talk about laser eye surgery, let's look at how your eye works.