Red eye or eye flu (often Conjunctivitis) is usually viral or allergic and may not need antibiotics. You can use lubricating eye drops and maintain good eye hygiene, avoid touching or rubbing the eyes, and wash hands frequently to prevent spread. If there is discharge, pain, swelling, or vision problems, a doctor may prescribe appropriate antibiotic or anti-allergy eye drops. It is best to consult a doctor for proper diagnosis and treatment.