ISRCTN ISRCTN16721218
DOI https://doi.org/10.1186/ISRCTN16721218
ClinicalTrials.gov (NCT) Nil known
Clinical Trials Information System (CTIS) Nil known
Integrated Research Application System (IRAS) 356506
Protocol serial number Nil known
Sponsor University College London
Funders Medical Research Foundation, Moorfields Eye Charity
Submission date
14/03/2025
Registration date
27/03/2025
Last edited
02/09/2025
Recruitment status
Not yet recruiting
Overall study status
Ongoing
Condition category
Eye Diseases
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English summary of protocol

Background and study aims
More treatment options than ever before are available for young people with vision impairment, but very little is known about the impact of these sight restoration therapies on wellbeing and mental health. In adults, sight restoration is often associated with depression and a reduction in mental wellbeing.
The aim of this study is to fully understand the wellbeing and mental health of adolescents undergoing sight restoration therapy and will develop clinical guidelines for the psychological support of young people receiving this treatment.

Who can participate?
Children and adolescents (age 10-20 years) with vision impairment who are receiving treatment expected to improve their vision.

What does the study involve?
Completing age-appropriate questionnaires five times: before receiving sight restoration treatment, then 1, 3, 6 and 12 months after treatment. Participating in a short interview before treatment and at the final visit. Participants' parent(s)/carer(s) will also complete a questionnaire at each assessment and a short interview at the first and last assessment.

What are the possible benefits and risks of participating?
Benefits: This is an exploratory study and is not likely to directly benefit participants. However, if needed, participants will be referred or signposted to appropriate mental health services.
Risks: It is possible that some of the interview questions may raise uncomfortable issues for participants or their parents/carers. The researchers have well-established risk management protocols, written in conjunction with clinical psychologists, which have been used for similar studies to ensure appropriate signposting and referral for participants who express signs of mental ill-health, up to and including emergency care.

Where is the study run from?
UCL Institute of Ophthalmology, part of University College London, in association with Moorfields Eye Hospital, Great Ormond Street Hospital for Children, and the NIHR Moorfields Biomedical Research Centre (UK)

When is the study starting and how long is it expected to run for?
January 2025 to December 2027

Who is funding the study?
1. The Medical Research Foundation (UK)
2. Moorfields Eye Charity (UK)

Who is the main contact?
Michael Crossland, m.crossland@ucl.ac.uk

Contact information

Dr Michael Crossland
Public, Scientific, Principal investigator

UCL Institute of Ophthalmology
11-43 Bath Street
London
EC1V 9EL
United Kingdom

ORCiD logoORCID ID 0000-0001-6833-6043
Phone +44 (0)2076086800
Email m.crossland@ucl.ac.uk

Study information

Primary study designObservational
Study designLongitudinal observational study
Secondary study designLongitudinal study
Study type Participant information sheet
Scientific titleThe emotional impact of restoring sight (EIRS): well-being and mental health in children and adolescents receiving sight restoring therapy for eye disease
Study acronymEIRS
Study objectivesThis study will use mixed qualitative and quantitative research methods to understand how sight-restoring treatment (for example, gene therapy for inherited retinal disease) affects the wellbeing and mental health of young people with vision impairment.
Ethics approval(s)

Not yet submitted, Ethics committee name not provided (Address not provided, City not provided, Zip/postal code not provided; Telephone number not provided; Email not provided), ref: Reference number not provided

Health condition(s) or problem(s) studiedAny eye disease causing bilateral vision impairment
InterventionParticipants will complete age-appropriate questionnaires to assess their mental health and wellbeing five times: before receiving sight restoration treatment, and 1, 3, 6 and 12 months after treatment. Before treatment and at the end of the study, participants will also complete a short qualitative interview.

Participants' parent(s)/carer(s) will also complete a questionnaire at each assessment and a short interview at the first and last assessment.
Intervention typeNot Specified
Primary outcome measure(s)

Mental wellbeing assessed using the Warwick Edinburgh Mental Wellbeing Scale at pre-treatment, months 1, 3, 6 and 12

Key secondary outcome measure(s)

1. Participation assessed using the Child and Adolescent Scale of Participation at pre-treatment, months 1, 3, 6 and 12
2. Depression and anxiety assessed using the Revised Children’s Anxiety and Depression Scale at pre-treatment, months 1, 3, 6 and 12
3. Sleep assessed by parental completion of the Children's Sleep Habits Questionnaire at pre-treatment, months 1, 3, 6 and 12
4. Qualitative findings from participant and parent interviews at pre-treatment and month 12

Completion date31/12/2027

Eligibility

Participant type(s)Patient, Carer
Age groupMixed
Lower age limit10 Years
Upper age limit20 Years
SexAll
Target sample size at registration36
Key inclusion criteria1. Young people aged 10-20 years
2. Meeting the ICD-11 criterion of having mild, moderate or severe vision impairment, or blindness, in their better eye
3. Receiving treatment intended to improve their visual function
4. With sufficient English comprehension to understand the age-appropriate questionnaires
Key exclusion criteriaDoes not meet the inclusion criteria
Date of first enrolment01/01/2026
Date of final enrolment31/12/2026

Locations

Countries of recruitment

  • United Kingdom
  • England

Study participating centres

NIHR Moorfields Biomedical Research Centre
Moorfields Eye Hospital NHS Foundation Trust
162 City Road
London
EC1V 2PD
United Kingdom
Dept. of Clinical & Academic Ophthalmology
Great Ormond Street Hospital
Great Ormond Street
London
WC1N 3JH
United Kingdom

Results and Publications

Individual participant data (IPD) Intention to shareYes
IPD sharing plan summaryAvailable on request
IPD sharing planDatasets generated and/or analysed during the current study will be made available upon request from Michael Crossland (m.crossland@ucl.ac.uk). To preserve the confidentiality of the participants, potentially identifiable data will be redacted.

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Participant information sheet Participant information sheet 11/11/2025 11/11/2025 No Yes

Editorial Notes

02/09/2025: The date of first enrolment was changed from 01/09/2025 to 01/01/2026.
14/03/2025: Study's existence confirmed by Medical Research Foundation.