On the other hand, infectious conjunctivitis, caused by bacteria or viruses, will usually start in one eye, but may eventually involve both eyes. The eyes feel more irritated or burning rather than itchy, and there is usually thick mucous or pus present, especially in the morning. The infection may be accompanied by fever and other viral symptoms. If your child has these complaints, a primary care clinician can help with diagnosis and treatment. Bacterial conjunctivitis is typically treated with prescription antibiotic eye drops or ointments, with symptoms improving after a few days of therapy. It can take two to three weeks for viral conjunctivitis to resolve, and it will get better without medication.