What Causes Blindness?

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The following eye diseases and conditions can cause blindness:

  • Glaucoma refers to four different eye conditions that can damage your optic nerve, which carries visual information from your eyes to your brain.
  • Macular degeneration destroys the part of your eye that enables you to see details. It usually affects older adults.
  • Cataracts cause cloudy vision. They’re more common in older people.
  • A lazy eye can make it difficult to see details. It may lead to vision loss.
  • Optic neuritis is inflammation that can cause temporary or permanent vision loss.
  • Retinitis pigmentosa refers to damage of the retina. It leads to blindness only in rare cases.
  • Tumors that affect your retina or optic nerve can also cause blindness.

Blindness is a potential complication if you have diabetes or have a stroke. Birth defects, eye injuries, and complications from eye surgery are other common causes of blindness.