Herpes zoster keratitis development after acute retinal necrosis.

Objective: To report a case of herpes zoster keratitis in a patient undergoing treatment for herpetic acute retinal necrosis.

Methods: Case report.

Results: A 71 year old male presented with acute retinal necrosis of the left eye due to herpes zoster and was treated with intravitreal foscarnet and oral valcyclovir. He developed a retinal detachment and underwent surgical repair. After four weeks, he developed an ipsilateral herpetic zoster keratitis demonstrated by Rose-Bengal staining that was responsive to topical ganciclovir gel.

Conclusions: This case report describes the unusual development of herpes zoster keratitis after the development of unilateral acute retinal necrosis (ARN) in a patient on antiviral treatment.