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What is conjunctivitis?

< 1 min read

Conjunctivitis is inflammation of the conjunctiva, the thin membrane covering the white of the eye and inner eyelids. It can be caused by infection, allergy, or irritants.

Main Types

Infective conjunctivitis is usually viral or bacterial, while allergic conjunctivitis is triggered by environmental allergens such as pollen or dust mites. Irritant conjunctivitis can follow chemical exposure, smoke, or contact lens overwear.

  • Common symptoms include redness, discharge, and gritty sensation
  • Vision is generally normal or only mildly blurred from discharge
  • One or both eyes can be affected

Diagnosis and Management

Diagnosis is based on history and slit-lamp examination. Treatment depends on type and may include lubricants, cold compresses, antihistamine drops, or short courses of antibiotics where appropriate.

Further Information

More detail on specific forms of conjunctivitis is provided in separate micro pages and supported by Blue Fin Vision® blog content on red eyes and allergy.