[Management of acute retinal necrosis syndrome with cystoid macular edema: a case report].

Acute retinal necrosis is a rare but devastating and rapidly progressive viral retinitis. We report the case of a healthy 46-year-old woman who presented bilateral acute retinal necrosis caused by varicella zoster virus (VZV). Intravenous and intravitreal antiviral therapy was given for 6 weeks and followed by oral therapy. After 3 months, the patient presented a bilateral macular edema which was treated first by laterobulbar injections of corticosteroids, then successfully by interferon alpha-2a. This clinical disease, which can cause major visual function impairment, must be known in order to treat it immediately.