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Astigmatism Definition

Definition

Astigmatism is a condition where vision is disordered (blurred, unfocused, fuzzy) because the cornea (the front surface of the eye) or lens, which is located behind the cornea, has an abnormal or irregular curve (misshaped). Astigmatism can occur in children as well as adults. Astigmatism is fairly common and not contagious.

There are two common types of astigmatism: corneal astigmatism and lenticular astigmatism.

  • Corneal astigmatism is when the cornea is misshaped.
  • Lenticular astigmatism is when the lens is misshaped.

There are several treatment options for astigmatism. If you suspect you have astigmatism, contact your doctor.

Normal Anatomy of the Eye

© 2009 Nucleus Medical Media, Inc.

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