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A pterygium is a wedge-shaped growth of thickened tissue that covers the white part of the eye. A pterygium typically starts growing near the inside of the corner of the eye. It often extends onto the cornea, towards the pupil. Both eyes can be affected. A pterygium may grow large enough to interfere with sight and can cause other annoying symptoms, it can safely be left alone.

Causes of a Pterygium: The exact cause is not known, although it is thought that it's more likely to develop in people who live in tropical climates, work outdoors and spends a lot of time in the sun.

Reasons for Surgical Removal

  • Threat to normal vision
  • Irritation, tearing and discomfort
  • Development or increase of astigmatic error
  • Redness or appearance
  • Contact lenses interference

Click to read about Pterygium management