Why Are My Eyes Red?
9. Keratitis
Keratitis occurs when the cornea of the eye becomes inflamed causing intense pain, impaired vision, sensitivity to light, having a gritty sensation, and redness of the affected eye. It can be classified based on the chronicity, etiologic agent, stage of disease, or environmental etiology.
For infective causes, it may be caused by bacteria (Pseudomonas aeruginosa, Staphylococcus aureus), virus (herpes simplex virus), amoeba (Acanthamoeba), fungal (Aspergillus fumigatus, Candida albicans), or parasites (Onchocerca volvulus). The treatment of keratitis depends on the underlying cause. Infectious keratitis requires elimination of the pathogen using antibacterials, antivirals, or antifungals. There are some infections that may cause corneal scarring, resulting in visual impairment.
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