The conjunctiva is a thin, transparent membrane the covers the white part of the eye and eyelids. Acute infections or inflammations of this membrane leads to conjunctivitis. If it is from an infectious source, it is usually contagious. This type of conjunctivitis occurs more commonly in children.
Causes of Conjunctivitis
Conjunctivitis is a viral or bacterial infection which may accompany colds or childhood diseases such as measles. Chemical irritation or wind, dust, smoke and other types of air pollution or home chemicals may, also, cause this condition. Allergies caused by cosmetics, pollen or other allergens may also be a factor. A partially closed tear duct, intense light, such as from sunlamps, snow reflection or electric arcs in welding may also cause conjunctivitis.
Signs and Symptoms of Conjunctivitis
Either one or both eyes will be affected by conjunctivitis. The inflammation will produce drainage from the eye. This drainage is usually green or yellow, and may form crusts on the eyelashes and around the eyelids after sleeping. The discharge causes the eyelids and eyelashes to stick together. A red, painful eye occurs that has a gritty sensation in it. The eyelids are frequently swollen. Itching may occur, particularly if the conjunctivitis is from allergic response.
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Medical Content Last Updated on 07/12/2008
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