Conjunctivitis or pink eye is an inflammation or infection of the conjunctiva – a thin, clear tissue that covers the white part of the eye and lines the inside of the eyelid. While it usually starts in one eye, it can affect both eyes. Some of the common causes of conjunctivitis include exposure to viruses, bacteria, allergies and irritants. Someone affected by the condition may experience symptoms such as redness, itchiness, excessive tearing, a gritty feeling in the eye and a kind of ... Pink eye is the inflammation or infection of the transparent membrane that lines your eyelid and eyeball. Learn about the common signs, possible causes and how to prevent the spread of this contagious condition. Pink eye, also called conjunctivitis , is an infection of the eye's conjunctiva usually caused by a bacteria or virus that results in red, itchy, painful eyes. Conjunctivitis , also known as pink eye, is the inflammation or infection of the conjunctiva, the transparent membrane that covers the white part of the eyeball and inner eyelid. Some forms (bacterial, viral) are highly contagious. Others may be triggered by an allergy or exposure to harsh chemicals ...