Herpes Zoster Ophthalmicus: A Review for the Internist.

Herpes zoster ophthalmicus occurs due to reactivation of the varicella zoster virus in the ophthalmic branch of the fifth cranial nerve. This disease primarily affects the elderly as well as the immunocompromised and can result in a wide range of ophthalmic morbidity. Systemic antiviral therapy is the mainstay of treatment; however, consultation with an ophthalmologist is typically indicated. Herein we present a review of this common entity including epidemiology, pathophysiology, evaluation, treatment, follow-up, and an update on the current body of literature.