This document discusses conjunctivitis, also known as pink eye. It defines conjunctivitis as inflammation of the conjunctiva, which covers the inner eyelid and white part of the eye. There are three main types of conjunctivitis: microbial, allergic, and toxic. Microbial conjunctivitis is usually caused by bacteria and viruses. Allergic conjunctivitis occurs due to allergic reactions. Toxic conjunctivitis results from prolonged use of eye medications. Symptoms include redness, discharge, tearing, swelling and eye pain. Treatment involves antibiotics, corticosteroids, or irrigation depending on the cause. Nursing care focuses on pain relief, hygiene and preventing spread. Pro