Pinkeye: Pinkeye (conjunctivitis) is a contagious infection caused by bacteria or viruses. Symptoms and signs include eyelids that are stuck together, tearing, clear drainage from the eye, itching, burning, or a gritty feeling in the eye, and light sensitivity. Treatment may involve the use of prescription eye drops or ointment to reduce swelling, redness, and discomfort and to help prevent the spread of the infection.