Conjuntivitis Conjunctivitis, also known as "pink eye," is an inflammation of the conjunctiva, which is the thin membrane that covers the white of the eyes. This membrane produces mucus to coat and lubricate the surface of the eye. The most common causes of conjunctivitis are viral and bacterial infections, allergies or environmental irritants. Typically the signs of conjunctivitis are a red, irritated eye in conjunction with a burning or scratchy feeling or, a pus-like discharge. Conjunctivitis, whether viral or bacterial, can be quite contagious, and contact with the infected person's tears should be avoided. Hand washing after contact will help to prevent the spread. Treatment Conjunctivitis caused by bacteria can be treated with antibiotics. However, conjunctivitis caused by viral infections cannot be treated with antibiotics. Consultation with your eyecare specialist is recommended. Back