The term "keratitis" brings together a diverse group of inflammatory processes affecting the cornea. According to the cause that determines it, keratitis can be divided into non-infectious and infectious. The non-infectious forms are associated generally with systemic inflammatory diseases. The infectious forms are among the leading causes of blindness and they can be caused by bacteria, viruses, fungi or protozoa. One particularly feared form of keratitis caused by protozoa is Acanthamoeba Keratitis. Keratitis is more common in contact lens wearers, and arises from the use of a inappropriate lenses, poor hygiene, prolonged use, or a pre-existing eye condition.
Symptoms vary greatly in relation to the cause but eye irritation, pain, blurred vision and photophobia (sensitivity to light) are generally always present.
Keratitis is an extremely feared condition. Therefore it is very important from the first ailments to call on an eye doctor as soon as possible, who will make an accurate diagnosis and prescribe the most appropriate treatment. This may involve the use of topical or systemic antibiotics, antiviral, anti-fungal and anti-inflammatory medications.