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Corneal Ulcers And Infections

Overview

A non-penetrating erosion, or open sore in the outer layer of the cornea, the transparent area at the front of the eyeball.


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Causes

Corneal ulcers are most commonly caused by an infection of bacteria, viruses, fungi, or amebas. Other causes are abrasions orforeign bodies, inadequate eyelid closure, severe dry eyes, severe allergic eye disease, and various inflammatory disorders.Bacterial keratitis may be caused by numerous organisms. Contact lens wear, especially soft contact lenses worn overnight, maybe a precipitating factor. Herpes simplex keratitis is a serious viral infection. It may have recurrences that are triggered by stress,exposure to sunlight, or any condition, disease or treatment which impairs the immune system. Corticosteroid therapy, given inthe presence of herpetic keratitis, has been associated with more extensive ulcers .Fungal keratitis can occur after corneal injury involving plant material, in an agriculture setting, or in immunocompromised(immunosuppressed) people. Acanthamoeba keratitis occurs in contact lens users, especially those who use homemade cleaningsolutions.Risk factors are dry eyes, severe allergies, history of inflammatory disorders, contact lens wear, immunosuppression, prolongedexposure to sunlight, and infection.


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Signs & Symptoms

Prompt, early attention by an ophthalmologist to any eye infection may prevent ulceration. Rigorous attention to cleanlinesswhile handling contact lenses and avoidance of overnight wearing of contact lenses may prevent infection or ulceration.

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Prevention

eye pain- impaired vision- eye redness (scleral injection)- white patch on the cornea- sensitivity to light (photophobia)- tearing, increasedAdditional symptoms that may be associated with this disease:- facial swelling- eye burning, itching & discharge


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Treatments
Antibiotic and Antiviral treatment Modern Medicine

Treatment of corneal ulcers and infections depends upon the cause and should be treated as soon as possible to prevent further injury to the cornea. Antibiotic, antiviral, or antifungal eye drops are prescribed as soon as the type of ulcer has been identified.Corticosteroid eye drops may be used to reduce inflammation in certain conditions, but they should be avoided with herpes

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