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Conjunctivitis, also known commonly as pink eye, is inflammation of the conjunctiva, or fine skin covering the eye and inner eyelids. Conjunctivitis is a common but usually harmless condition caused by allergy (as part of hay fever), foreign bodies, or infection with viruses or bacteria. It causes irritation, watering, and sticky discharge, but does not affect vision. Eye drops may help, as can antibiotics if bacteria are present.

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