Does antibiotic treatment treat conjunctivitis?

Conjunctivitis is inflammation of the thin covering over the white part of the eye and inner eyelids. Bacterial infection may cause sticky discharge and eyelids that cling together, while viral infection often causes watery discharge and may occur with a cold. Allergy commonly causes itching and affects both eyes. Irritants such as smoke, dust, or chemicals can also trigger redness.

These patterns overlap, so eye redness alone cannot identify the cause. Antibiotic drops or ointment will not treat a virus or allergy, and unnecessary use can irritate the eye. A clinician or pharmacist can help decide whether an antibiotic is appropriate, particularly for a child, contact-lens wearer, or person with a recent eye procedure.

Wash your hands before and after touching the eye, do not share towels or cosmetics, and avoid rubbing the eyelids. Clean discharge gently with clean water and a fresh pad each time. Stop wearing contact lenses until symptoms have cleared and a clinician confirms when they can be used again; replace lenses or cases if advised.

Use an antibiotic only when prescribed or specifically recommended, and follow the directions for the full course. Do not use old eye medicine or someone else’s drops. Artificial tears or a cool compress may ease irritation when suitable, but ask a professional before using medicated drops.

Get urgent eye assessment for severe pain, light sensitivity, reduced or blurred vision, marked swelling, injury, chemical exposure, or a red eye while wearing contact lenses. Seek prompt advice if a newborn has eye discharge, if symptoms rapidly worsen, or if treatment has not helped as expected. These features can signal a problem deeper than uncomplicated conjunctivitis.

Ask what cause is most consistent with your symptoms, whether you need antibiotic drops, when you can return to work or school, and when contact lenses are safe. If infection is suspected, ask how to limit spread within your household.