LASIK is an acronym that represents the medical term for laser-assisted in situ keratomileusis. It is the process of correcting refractive errors, which are due to the incorrect shape of the cornea.
The cornea is the outer layer of the eye, and is responsible for refracting light that comes into the eye. The light is refracted directly through the lens and onto the retina, where the focused images are transmitted to the brain. If light isn’t correctly refracted directly through the optical system and onto the retina, a person will experience refractive error. This happens when the cornea is not a perfect dome shape on the eye.
There are three types of refractive error: nearsightedness, farsightedness and astigmatism.
Nearsightedness, also known as myopia, happens when the cornea is too steep. This means that when light enters the eye, the distance from the cornea to the retina is too far. This results in the light being focused in front of the retina. Nearsighted people can see objects that are close, but anything far away appears blurry.
Farsightedness is known as hyperopia, and happens when the cornea is too flat. This causes light to be projected behind the cornea. People with farsightedness can see objects in the distance clearly but they have trouble seeing things close up.
When someone has astigmatism, all objects are misshapen. The shape of a normal cornea is a round basketball shape. If you have astigmatism, your cornea is shaped more like a football or oval shape. All objects, both far and near, appear distorted.
LASIK can correct all three of these refractive errors by using a laser to reshape the cornea into a round, dome shape.
If you are interested in finding out more about LASIK, call our office to schedule a free LASIK Consultation or book your appointment online. At this appointment the doctor will determine if you are a Lasik candidate. Colorado Ophthalmology Associates also provides many different options, and will offer their advice on the best treatment for improving your eyesight.