H16.03

Clinical Causes: Bacterial infections, such as those caused by staphylococci, streptococci, or Pseudomonas species. Viral infections, including herpes simplex virus. Fungal infections, often following eye trauma involving plant material or soil. Parasitic infections, like Acanthamoeba keratitis. Corneal trauma or injury, which can introduce infectious agents or cause structural damage. Contact lens misuse or poor hygiene leading to microbial contamination. Pre-existing eye conditions, such as dry eye or eyelid disorders, increasing susceptibility. Eye surgeries or procedures that compromise corneal integrity.

Key Symptoms: Eye pain or discomfort, often severe Redness in the affected eye Decreased or blurred vision Sensitivity to light (photophobia) Tearing or watering of the eye A visible white or yellowish film or ulcer on the cornea Presence of hypopyon, which appears as a white or yellowish layer of pus settling at the bottom of the anterior chamber Foreign body sensation or feeling of a gritty eye

Diagnosis Path: Diagnosis involves a comprehensive eye examination by an ophthalmologist, including slit-lamp biomicroscopy to assess the corneal lesion and hypopyon. Corneal scrapings and cultures may be taken to identify the infectious agent. Additional tests such as fluorescein staining help outline the ulcer. Imaging studies are rarely necessary but can assist in complex cases.

Treatment Protocols: Management focuses on eliminating the infectious agent and promoting healing. Typical treatments include: - **Topical antimicrobial medications** tailored to the identified pathogen, such as antibiotics, antifungals, or antivirals. - **Steroid eye drops** may be used cautiously to reduce inflammation, under close medical supervision. - **Pain management** with appropriate eye drops or systemic medications. - **Protective measures**, like eye patches or shields, to prevent further injury. - **Follow-up evaluations** to monitor healing and detect complications early. - In severe cases, **surgical interventions** like corneal transplantation may be necessary if the ulcer causes significant tissue destruction. Early and aggressive treatment is crucial to prevent complications, including scarring or perforation of the cornea, which can impair vision.