Bilateral retinal artery occlusions as the first manifestation of extramedullary central nervous system involvement in relapsed acute myeloid leukaemia.

Retinal artery and vein occlusion are rare devastating complications of central nervous system (CNS) leukaemic infiltrates of the retina and its vasculature. Only a handful of reports exist wherein CNS relapse presents with retinal vascular occlusions. This is usually accompanied by optic nerve swelling and subretinal infiltrates. We present a case of bilateral retinal artery occlusion as a first manifestation of CNS relapse in a patient with acute myeloid leukaemia without optic disc oedema and retinal infiltrates.