Conjunctivitis, also known as pink eye, is an inflammation or infection of the transparent membrane (conjunctiva) that lines the eyelid and covers the white part of the eye. The main symptoms are pink or red eyes, itching, burning, tearing, and discharge from the eye that can be watery or thick and purulent. There are three main types - viral conjunctivitis which spreads easily and causes watery discharge, bacterial conjunctivitis which causes thick pus-like discharge, and allergic conjunctivitis triggered by allergens. It can be transmitted through direct contact with infected eye secretions or contact with contaminated surfaces. Diagnosis is based on symptoms and whether the