Cytomegalovirus Retinal Necrosis With Occlusive Vasculopathy Secondary to Steroid Immunosuppression for Giant Cell Arteritis.

Corticosteroid immunosuppression for GCA may lead to immune dysfunction allowing for an atypical occlusive vasculitis with retinal necrosis from CMV. Early identification and treatment are essential to adjust the level of immunosuppression and consider alternate therapies to control the GCA and prevent worsening of this opportunistic infection.