Central retinal artery occlusion caused by external carotid artery plaque dispersal during carotid artery stenting: A case report

Risk factors for CRAO after CAS include older age, severe stenosis, and the OA fed from the ECA. In this case, ECA was protected with the Mo.Ma Ultra and ICA with the Filter Wire EZ, but the patient developed CRAO. No plaque in filter, no cerebral infarction at all on MRI, likely due to crushing of unstable plaque in the ECA during induction of the Mo.Ma Ultra. It is important to develop a treatment strategy after understanding the characteristics of the plaque and effective embolic protection.