Central Retinal Artery Occlusion in a 6-Year-Old Child with an Acute Chickenpox Infection: A Case Report

<b>Background:</b> Central retinal artery occlusion (CRAO) is an ophthalmic emergency attributed to a vessel occlusion with an embolus or a thrombus and may occur during the hypercoagulable state, inflammation, or vasculitis. CRAO may occur in children; however its incidence is very rare. Most pediatric cases have detectable etiologies. <b>Case Presentation:</b> We describe the case of an otherwise-healthy six-year-old female, who presented with the sudden and complete vision loss of the left eye lasting over twelve hours after a six-day chickenpox exanthema, followed by a high fever. All the ophthalmological, laboratory, and instrumental investigations led to the diagnosis of a left CRAO. Laboratory testing was unremarkable except for the transient elevation of D dimers (1363 µg/L), IgM anticardiolipin antibodies (238.5 CU), and IgG anti-beta-2 glycoprotein-1 antibodies (76.1 CU) on admission. Thrombolytic treatment was not exerted because of late presentation to the hospital. Treatment with steroids, antiviral medications, antibiotics, and anticoagulants was obtained, but the visual outcome was poor during the hospitalization and at the last follow-up. We could not ascribe features of this case to any etiological condition apart from the documented ongoing chickenpox infection. <b>Conclusions:</b> This is the first case report of CRAO in a child with transient aPL elevation and acute chickenpox infection.