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Conjunctivitis


Overview, Causes, & Risk Factors

The conjunctiva is the clear mucous membrane layer covering the white portion of the eye. It extends under the eyelid where it turns back and becomes the underneath mucous membrane lining of the upper and lower lids. When this membrane becomes inflamed, it is called conjunctivitis.

What are the causes and risks of the infection?

Conjunctivitis can be caused by a number of factors, including:

  • allergies
  • bacterial, viral, and fungal infections
  • chemicals or fumes
  • foreign matter that gets under the eyelid