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Bacterial Conjunctivitis

Bacterial conjunctivitis is an infection of the conjunctiva, the thin membrane that covers the white part of the eye and the inside of the eyelids. When this membrane becomes inflamed, the small blood vessels become more visible and the eye appears red or pink.

This condition is commonly known as “pink eye” and may affect one or both eyes. It occurs when bacteria enter the eye, often through contact with contaminated hands, objects or respiratory secretions.

Common Symptoms

Symptoms of bacterial conjunctivitis may include:

  • redness of the eye
  • thick yellow or green eye discharge
  • burning or irritation in the eye
  • itching or discomfort
  • swollen eyelids
  • crusting of the eyelids, especially after sleep

The discharge may cause the eyelids to stick together, particularly in the morning.

Possible Causes

Bacterial conjunctivitis develops when bacteria infect the conjunctiva. The infection may spread through direct contact with contaminated hands, shared personal items or surfaces. It may also occur during respiratory infections such as colds.

References

Content adapted from information provided by Ontario Health – Health811:https://health811.ontario.ca/static/guest/medical-library/condition?name=bacterial%20conjunctivitis