The conjunctiva is a thin tissue lining the outer surface of the sclera and episcleral layer and is well vascularized and highly reactive. If an infection or ocular trauma occurs the conjunctiva will easily react and becomes red and swollen (conjunctivitis = inflammation of the conjunctiva). Recurrent bouts of conjunctivitis are the most common symptoms of a herpesvirus infection in younger cats. This condition is often unilateral, and the cat may present with tearing, ocular discharge and red or swollen conjunctivae. The cat may also have an episode of sneezing during this active infection. The condition is often self-limiting and may recur from time to time.
