Keratoconus is a common eye disease in which the naturally round-shaped cornea becomes thin and begins to bulge into a cone-like shape. The cone-shaped cornea deflects light differently as it enters the eye on its way to the light-sensitive retina, causing distorted vision.

  • Sudden change of vision in only one eye
  • Double vision when looking with only one eye
  • Objects both far and close up appear distorted.
  • Lights streaking
  • Seeing halos around lights

Tiny protein fibers (collagen) in the eye help hold the cornea in place and keep it from bulging. When these fibers are weakened, they cannot hold the shape and the cornea becomes progressively more cone shaped.

Treatment usually begins with new eyeglasses. If eyeglasses don't provide clear vision, then contact lenses, usually rigid gas permeable contact lenses, might be recommended. With mild cases, new eyeglasses can usually make vision clear again.

A treatment called cornea collagen crosslinking is often effective to help preventany further progression. Implants (intacs) are placed under the surface of the cornea in order to reduce the cone-shaped cornea and help to improve the patient's vision.

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