MBCT-vision VSS RCT

Inclusion Criteria: * People with VSS according to the ICHD-3 criteria; previously diagnosed by a Neurologist, Ophthalmologist or Neuro-Ophthalmologist Exclusion Criteria: * Patients with co-morbid conditions affecting vision * Patients with a current severe depressive or psychotic episode as determined by the psychologist * Patients with severe difficulties in emotional regulation as determined by the psychologist * Patients unable to provide informed consent for participation * Patients with insufficient understanding of spoken English (due to need to participate in group discussions) * Patients who have previously completed MBCT or similar mindfulness interventions * Persons aged \<16 or \>80 years An exploratory sub-study on the change in metabolomics will recruit healthy controls, inclusion criteria: Healthy Control Inclusion Criteria * Family or household member of a similar age (+/- 8years) to a participant with VSS recruited into the MBCT-vision VSS RCT study * Person with no symptoms of VSS * Person who self-declares as fit and well with no current medical conditions including anxiety or migraine Healthy Control Exclusion Criteria * Person unable to provide informed consent * Person with other co-morbid medical or psychological conditions * Person aged \<16 or \>80years