Viral and bacterial pink eye (conjunctivitis) spread easily through direct contact with fluid from an infected eye — touching a contaminated hand, towel, pillowcase, or countertop and then touching your own eye. Allergic pink eye and chemical conjunctivitis are not contagious.
You’re contagious from the moment symptoms appear. Bacterial pink eye stays contagious until about 48 hours after starting antibiotic drops. Viral pink eye — the more common type — can remain contagious for up to two weeks while symptoms last. The adenovirus that causes many cases of viral pink eye can survive on hard surfaces for up to 30 days.
Good hygiene is the main defense: wash your hands frequently, don’t share towels or pillowcases, avoid touching your eyes, and stay home from school or work while symptoms are active. If your eye is painful, light-sensitive, or your vision is blurry, see a doctor.
Sources
This is general information, not professional medical advice. For decisions about your situation, talk to a qualified professional.
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