The patient presents to the ophthalmological emergencies and / or to the internal medicine department. NOIA clinical discovery Patient referred in radiology for brain and visual MRI. The two sequences added by the research (8 minutes) will be added to that of the treatment.
Patient over 18 years old
Patient with suspected NOIA, evoked after clinical examination by a specialized ophthalmologist
For which a brain and visual MRI is planned
Express consent to participate in the study
Contraindication to MRI (electrical device, metallic foreign body, claustrophobia)
Patient benefiting from a legal protection measure
Pregnant or breastfeeding woman