A Short Review of Herpes Zoster Ophthalmicus
Herpes zoster (HZ) is caused by reactivation of latent varicella zoster virus (VZV) within sensory ganglia. This reactivation is named as herpes zoster ophthalmicus (HZO) when it occurs in the ophthalmic branch (V1) of the trigeminal nerve. HZO begin with a typical dermatomal rash. However, it can progress to keratitis, anterior uveitis, secondary glaucoma, neurotrophic keratopathy, and rarely posterior segment involvement. It can cause permanent vision loss in severe cases. Early identification, systemic antiviral therapy, and appropriate follow up can reduce morbidity and visual impairment.
