Bacterial conjunctivitis, commonly known as pink eye, is an infection of the conjunctiva, the thin membrane covering the white part of the eye and the inside of the eyelids. Characterized by redness, swelling, and discharge, bacterial conjunctivitis is usually caused by various bacteria, including Staphylococcus aureus and Haemophilus influenzae. Treatment typically involves antibiotics to eradicate the bacterial infection and alleviate symptoms. Medications for bacterial conjunctivitis often include topical antibiotics such as eye drops or ointments, which directly target the infection and help to reduce symptoms like discharge and irritation.