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Definition of «Corneal dystrophy»

Corneal dystrophy

Corneal dystrophy: A condition in which one or more parts of the cornea lose their normal clarity due to a buildup of cloudy material. There are over 20 corneal dystrophies that affect all parts of the cornea.

These diseases share many traits:

  • They are usually inherited.
  • They affect the right and left eyes equally.
  • They are not caused by outside factors, such as injury or diet.
  • Most progress gradually.
  • Most usually begin in one of the five corneal layers and may later spread to nearby layers.
  • Most do not affect other parts of the body, nor are they related to diseases affecting other parts of the eye or body.
  • Most can occur in otherwise totally healthy people.

Corneal dystrophies affect vision in widely differing ways. Some cause severe visual impairment, while a few cause no vision problems and are discovered during a routine eye examination. Other dystrophies may cause repeated episodes of pain without leading to permanent loss of vision.

See also: Cogan corneal dystrophy, epithelial basement corneal dystrophy, Fuchs endothelial corneal dystrophy, keratoconus, lattice dystrophy, map-dot-fingerprint type corneal dystrophy, and microcystic corneal dystrophy.

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