Description of the Neurovisual and Radiological Specificities of Patients With Visual Snow Syndrome

Inclusion Criteria: Case group: * Patient aged up to 55 * Diagnosis of visual snow syndrome according to the international criteria * Visual snow symptoms still present * Express consent to participate in the study Control group: * Person aged up to 60 * Matched to an SNV patient on age (+/- 5 years) and sex * Express consent to participate in the study Exclusion Criteria: Case group: * Patient with an absolute or relative contraindication to MRI (claustrophobia, incompatible implantable device, etc.) * Patient benefiting from a legal protection measure * Pregnant or breastfeeding woman * Non-French speaking patient * Added psychiatric or neurodegenerative pathology unrelated to visual snow likely to induce neurocognitive and neurovisual disorders in the short or long term * Ophthalmologic comorbidity that may interfere with the interpretation of examinations Control group: * Patient with an absolute or relative contraindication to MRI (claustrophobia, incompatible implantable device, etc.) * Person benefiting from a legal protection measure * Pregnant or breastfeeding woman * Non-French speaking person * Psychiatric or neurodegenerative pathology likely to induce neurocognitive and neurovisual disorders in the short or long term * Ophthalmologic comorbidity that may interfere with the interpretation of examinations