Pterygia are wedge-shaped growths of benign fibrous tissue that contain blood vessels. They are typically located on the eye’s surface, but in extreme cases may grow onto the cornea and cause vision problems. Many people with pterygia do not experience symptoms or require treatment.

Symptoms of Pterygium

  • May become red, swollen, or thick
  • May create the sensation of having a foreign body in the eye
  • Can distort the cornea’s surface and cause astigmatism

Causes of Pterygium

  • Prolonged exposure to the sun’s ultraviolet light

Treatment of Pterygium

  • Eye drops or lubricants to reduce redness and swelling
  • Minor surgery to remove the pterygia

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Visit the American Academy of Ophthalmology’s webpage on Pterygium.