Corneal Infections (Keratitis)

Keratitis is an infection of the cornea caused by bacteria, fungi, viruses, or parasites, and can threaten vision if untreated. Risk factors include contact lens overuse or poor hygiene, eye trauma, corneal abrasion, immunosuppression, and pre-existing ocular surface disease. Symptoms include severe eye pain, redness, blurred vision, light sensitivity, discharge, and a visible white corneal spot. Diagnosis involves slit-lamp examination, fluorescein staining, corneal scraping for culture, and PCR testing for viral causes. Management focuses on prompt antimicrobial therapy and preventive hygiene measures.