What Causes Cataracts?

A cataract can occur due to many reasons.

  • Age: As people age, changes can occur in the structure of the lens protein leading to cataract.
  • Congenital: Cataract can occur in new borns as inherited disorder or can develop in infants because of infections in mother during pregnancy such as rubella, herpes simplex and syphilis.
  • Secondary causes- Cataract can form as a complication of other diseases such as glaucoma and diabetes. Oral cortisone almost always causes cataract eventually.
  • Trauma – Certain injuries may result in formation of a cataract. Cataract may also develop years after the injury.

Other causes include excessive exposure of the eyes to UV rays, X-rays and other radiation during radiotherapy.