Special thanks to Dr. Michael Kelly and his assistant Erika Britt, as well as Bryan Lemon and Melissa Wood from LaserVision for their assistance in creating this article.
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.

The Excimer laser used in my LASIK surgery

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 edition of HowStuffWorks, 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.