How the Eye Works

normal eye

In order to see clearly, rays of light pass through the cornea, pupil and lens of the eye.  The image is focused directly on the retina.

Nearsighted Vision

In a nearsighted person, the cornea is too steep or too long and the focal point is in front of the retina resulting in blurred vision.

Farsighted Vision

In a farsighted person, the focus of the eye is behind the retina.  People who are farsighted may have trouble seeing at a distance and near.


Astigmatism occurs when the eye is not completely round but shaped more like a football.  Light that enters the eye focuses on more than one spot on the retina, resulting in blurring of vision.  Astigmatism can occur with nearsightedness or farsightedness.

Learn more about how LASIK can correct many of these vision disorders and to see if you are a candidate.

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