Overview Chlorsig contains chloramphenicol, a synthetic antibiotic, as the active ingredient. It is used to treat an eye infection called bacterial conjunctivitis, which is a bacterial infection involving the mucous membrane of the surface of the eye. The most common symptom is the presence of a sticky yellow-white discharge with mucus and pus (or glued eyes, especially in the morning on waking). Other symptoms include a gritty sensation in the eye, redness, irritation and watering of the eyes. The infection usually starts in one eye and then spreads to the other. They may have prescribed it for another purpose. Directions Follow all directions given to you by your doctor, optometrist or pharmacist carefully. For adults and children (2 years and over): Apply 1.5 cm of eye ointment every three hours for up to 5 days or as directed by your doctor, optometrist or pharmacist. If ointment is used together with drops for day and night coverage, eye ointment should be applied before bedtime while using the drops during the day. If the condition does not get better after 2 days, seek medical advice.