Diseases
bacterial conjunctivitis
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Overview
Pink eye (conjunctivitis) is an inflammation or infection of the transparent membrane (conjunctiva) that lines your eyelid and covers the white part of your eyeball. When small blood vessels in the conjunctiva become inflamed, they're more visible. This is what causes the whites of your eyes to appear reddish or pink.
Symptoms
- redness in one or both eyes
- itchiness in one or both eyes
- a gritty feeling in one or both eyes
- tearing
- a discharge in one or both eyes that forms a crust during the night.
Causes
- viruses, or bacteria.
- allergies, or a chemical splash in the eye.
- a foreign object in the eye, or in newborns, a blocked tear duct.
Risk factors
- exposure to something for which you have an allergy (allergic conjunctivitis)
- exposure to someone infected with the viral or bacterial form of conjunctivitis
- using contact lenses, especially extended-wear lenses
Diagnosis
- doctor can diagnose pink eye by asking questions.
- physical exam
Medicines used
Frequently asked questions
What is bacterial conjunctivitis?
Pink eye (conjunctivitis) is an inflammation or infection of the transparent membrane (conjunctiva) that lines your eyelid and covers the white part of your eyeball. When small blood vessels in the conjunctiva become inflamed, they're more visible. This is what causes the whites of your eyes to appear reddish or pink.
What are the symptoms of bacterial conjunctivitis?
redness in one or both eyes, itchiness in one or both eyes, a gritty feeling in one or both eyes, tearing, a discharge in one or both eyes that forms a crust during the night.
What causes bacterial conjunctivitis?
viruses, or bacteria.; allergies, or a chemical splash in the eye.; a foreign object in the eye, or in newborns, a blocked tear duct.
Which medicines are used for bacterial conjunctivitis?
ciprofloxacin, doxycycline, oxytetracycline
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