How laser eye correction can help you

Posted in Laser Eye Surgery on June 25, 2010

To know how laser eye correction works, you first need to know the functioning of your eyes and the different problems which can affect them.

How the eye functions

The eye works by focusing light rays as a camera does. The light that enters the eye passes a transparent layer called the cornea. This acts as a lens and focuses the light. The crystalline lens which is located behind the cornea further focuses the light to process a clear image on the retina, which is behind the eye. The image is then sent to the brain by the optic nerve.

The most common problem is blurred vision, the inability to focus inward light exactly onto the retina. There are four major types of focusing errors:

Short-sightedness

Short-sighted people are able to see closer objects better than those further away. This condition is also known as myopia, with rays of light from distant objects not being focused onto the retina but in front of it. Long-sightedness

People suffering from long-sightedness see objects that are far away better than those nearby. It is also known as hyperopia.

Astigmatism

When the eyes cannot focus the light rays evenly.

Presbyopia

Presbyopia refers to the eye's capability to alter the focus from far to near. Presbyopia is a normal part of the aging process.