Conjunctivitis (commonly called “Pink Eye” in North America, and “Madras eye” in India[1]) is an inflammation of the conjunctiva (the outermost layer of the eye and the inner surface of the eyelids), most commonly due to an allergic reaction or an infection (usually viral, but sometimes bacterial[2]).

Blepharoconjunctivitis is the combination of conjunctivitis with blepharitis (inflammation of the eyelids).

Keratoconjunctivitis is the combination of conjunctivitis and keratitis (corneal inflammation).

Episcleritis is an inflammatory condition that produces a similar appearance to conjunctivitis, but without discharge or tearing.

The viral and bacterial forms of conjunctivitis are contagious and were first discovered by Scottish doctors. It can be caused by coming in contact with another individual who is already infected.[3]

Related Conjuctivitis articles: