Red eye, also known as acute catarrhal conjunctivitis, is extremely contagious and the common causative agent in children is Haemophilus influenzae. Symptoms in the eye include conjunctival congestion, edema, and purulent or mucus discharge, with symptoms peaking in 3-4 days. If there is a lot of discharge from the eye, a non-irritating rinse, such as saline, can be used to flush the conjunctival sac. Flushing is best done by a nurse at a hospital to avoid damaging the child’s corneal epithelium and avoid cross-infection from the rinse solution into the healthy eye. Topical antibiotic eye drops, such as tobramycin eye drops, should be used frequently, once every two hours. Antibiotic eye ointment, such as erythromycin eye ointment and tetracycline eye ointment, is given at night. If combined with pharyngitis and acute suppurative otitis media, oral cephalosporin antibiotics may be given. Red eye is highly contagious, so be sure to pay attention to the personal hygiene of the affected child, wash your hands and face regularly, don’t let your child wipe his eyes with his hands or sleeves, and don’t send him to school during the illness.