NCT06018103

Brief Summary

Visual Snow Syndrome (VSS) is a neurological condition with bran network dysregulation involving the visual pathway. This is a research trial comparing the effect of an 8-week mindfulness-based intervention via a group-learning course, the MBCT-vision programme, to treat Visual Snow Syndrome, compared to people on a standard care (wait-list control). Participants will be randomly allocated to either the Treatment group (MBCT-vision), or the Control group (wait-list control). After a waiting period, people allocated to the Control group will also be offered the MBCT-vision treatment. The primary outcome is to compare the severity of the visual symptoms on a 0 to 10 scale between the two groups.

Trial Health

65
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
60

participants targeted

Target at P25-P50 for not_applicable

Timeline
7mo left

Started Jan 2024

Typical duration for not_applicable

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress81%
Jan 2024Dec 2026

First Submitted

Initial submission to the registry

August 25, 2023

Completed
5 days until next milestone

First Posted

Study publicly available on registry

August 30, 2023

Completed
4 months until next milestone

Study Start

First participant enrolled

January 1, 2024

Completed
1.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 1, 2025

Completed
1.4 years until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2026

Expected
Last Updated

August 31, 2023

Status Verified

August 1, 2023

Enrollment Period

1.5 years

First QC Date

August 25, 2023

Last Update Submit

August 30, 2023

Conditions

Keywords

Visual Snow SyndromeMindfulness

Outcome Measures

Primary Outcomes (1)

  • Severity of visual symptoms of Visual Snow Syndrome on a 0-10 VAS

    Severity of VSS visual symptoms

    5 months

Secondary Outcomes (4)

  • Psychological wellbeing on the World Health Organisation (WHO) wellbeing index scores

    5 months

  • Psychological distress on the Clinical Outcomes in Routine Evaluation (CORE-10) scores

    5-months

  • Impact of Visual Snow Syndrome symptoms on daily life on 0-10 scale

    5-months

  • Work and Social Adjustment Scale

    5-months

Study Arms (2)

Treatment

EXPERIMENTAL

8-week online group learning course of the MBCT-vision programme

Behavioral: MBCT-vision

Control

NO INTERVENTION

wait-list control (standard care, no research intervention)

Interventions

MBCT-visionBEHAVIORAL

8-week mindfulness group learning course, using Mindfulness Based Cognitive Therapy customised for visual symptoms (MBCT-vision). Participants meet once weekly only, with daily home practice between sessions.

Treatment

Eligibility Criteria

Age16 Years - 80 Years
Sexall
Healthy VolunteersYes
Age GroupsChild (0-17), Adult (18-64), Older Adult (65+)

You may qualify if:

  • People with VSS according to the ICHD-3 criteria; previously diagnosed by a Neurologist, Ophthalmologist or Neuro-Ophthalmologist

You may not qualify if:

  • 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
  • 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
  • Person unable to provide informed consent
  • Person with other co-morbid medical or psychological conditions
  • Person aged \<16 or \>80years

Contact the study team to confirm eligibility.

Sponsors & Collaborators

MeSH Terms

Conditions

visual snow syndrome

Study Officials

  • Sui Wong, MD

    Guy's and St Thomas' NHS Foundation Trust

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Masking Details
Statistician performing the analysis will be masked. It is not possible to mask the participant nor the investigator due to the nature of the intervention (group learning programme on mindfulness)
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: Randomized Control Trial of two groups: Treatment (MBCT-vision), or Control (wait-list, standard of care)
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

August 25, 2023

First Posted

August 30, 2023

Study Start

January 1, 2024

Primary Completion

July 1, 2025

Study Completion (Estimated)

December 1, 2026

Last Updated

August 31, 2023

Record last verified: 2023-08

Data Sharing

IPD Sharing
Will not share

anonymised numeric data to be shared upon reasonable request from qualified researcher after review by Eye Research Governance and data transfer agreement