B01.81

Clinical Causes: Reactivation of the varicella-zoster virus in the eye Spread of the virus from a shingles outbreak near the eye Infection following primary chickenpox in immunocompromised individuals

Key Symptoms: Eye redness and inflammation Pain or discomfort in the affected eye Blurred or decreased vision Sensitivity to light (photophobia) Tearing or discharge from the eye A feeling of a foreign body in the eye Potential corneal ulceration in severe cases

Diagnosis Path: Diagnosing varicella keratitis involves a comprehensive eye examination by an ophthalmologist. The process typically includes a detailed patient history to identify any recent shingles rash or chickenpox. Clinical signs such as corneal inflammation and lesions are assessed. Sometimes, laboratory tests like PCR (polymerase chain reaction) or viral cultures are performed to detect the varicella-zoster virus in eye tissues or tear samples. Anterior segment imaging may support the diagnosis in ambiguous cases.

Treatment Protocols: Treatment strategies focus on reducing inflammation, controlling the viral infection, and preventing complications. Common approaches include: - Antiviral medications, such as acyclovir, valacyclovir, or famciclovir, administered orally or topically - Use of corticosteroid eye drops to diminish inflammation, under careful supervision - Lubricating eye drops to soothe irritation - Regular monitoring by an eye specialist to assess response to treatment and avoid secondary infections In some cases, surgical interventions may be necessary if corneal scarring or ulcers develop, to preserve or improve vision. Early intervention is crucial to minimize lasting damage.