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Pilot RCT of Computer-based Eye Movement Training

Computer-based Eye Movement Training for Stroke-related Visual Field Loss: a Pilot Randomised Controlled Trial

Status
Not yet recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07752563
Acronym
CRYSTAL
Enrollment
60
Registered
2026-08-07
Start date
2026-10-01
Completion date
2027-07-31
Last updated
2026-08-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Stroke

Keywords

visual field loss, rehabilitation, pilot RCT, process evaluation

Brief summary

The goal of this study is to learn whether NeuroEyeCoach, a computer-based eye movement training programme, can help stroke survivors with visual field loss. The study will also assess whether a larger clinical trial is feasible. The main questions it aims to answer are: * Can stroke survivors be successfully recruited, randomised and followed up in a larger trial? * Is NeuroEyeCoach acceptable and practical to use? * Is there early evidence that NeuroEyeCoach improves vision-related functioning and wellbeing? Researchers will compare NeuroEyeCoach plus usual care with usual care alone. Participants will: * Be randomly assigned to receive NeuroEyeCoach plus usual care or usual care alone * Complete six weeks of training if allocated to NeuroEyeCoach * Complete questionnaires and tests of vision, daily activities, quality of life, confidence and wellbeing * Take part in follow-up assessments over six months This pilot trial will include 60 stroke survivors living with visual field loss after stroke. Findings will be used to inform the design of a larger study.

Interventions

DEVICENeuroEyeCoach eye movement training

computer based eye movement training for visual field loss in stroke

OTHERUsual Care

Usual post-stroke care

Sponsors

Glasgow Caledonian University
Lead SponsorOTHER
National Health Service, United Kingdom
CollaboratorOTHER_GOV

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
SINGLE (Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* adult (\>18 years) * stroke survivor * stroke-related homonymous VFL (minimum quadrantanopia) * sufficient language, cognitive, and upper limb ability to participate in trial activities.

Exclusion criteria

* pre-existing (ie pre-stroke) registration as sight impaired (partially sighted) or severely sight impaired (blind) * • history of seizure disorders, especially those of a photosensitive nature

Design outcomes

Primary

MeasureTime frameDescription
Recruitment ratethrough study completion, estimated at 15 monthsRate of recruitment to the trial

Secondary

MeasureTime frameDescription
Retention Ratethrough study completion, estimated at 15 monthsRate of retention of participants in the study
Screening and eligibility rateActive screening periodScreening and eligibility rate
Outcome measure completion rateover data collection periodthrough study completion, estimated at 15 months
intervention adherence6 weeksadherence to recommended training regime (duration)
Adverse eventsup to 6 weeksany adverse eventa experienced
Support and computer provision needsup to 6 weeksTo what extent must technical equipment or assistance be given
NEI VFQ 25 (National Eye Institute Visual Function Questionnaire-25)baseline, 6 weeks post randomisation, 6 months post randomisationPatient-reported measure of vision-related functioning. Minimum value is 0, and maximum value is 100; higher scores mean a better outcome
EQ-5D 5Lbaseline, 6 weeks post randomisation, 6 months post randomisationGeneric health related quality of life Maximum value 1.0; better scores mean a better outcome
IReST (International Reading Speed Test)baseline, 6 weeks post randomisation, 6 months post randomisationReading test (words per minute)
Melbourne Rapid Fieldsbaseline, 6 weeks post randomisation, 6 months post randomisationvisual field test
Confidence after Stroke Measurebaseline, 6 weeks post randomisation, 6 months post randomisationValidated questionnaire that explores self-confidence, positive attitude and social confidence Minimum score is 0 and the maximum score is 81; a higher score indicates better outcome Ref: Horne JC, Lincoln NB, Logan PA. Measurement of confidence: the development and psychometric evaluation of a stroke-specific, measure of confidence. Clin Rehabil. 2017 Nov;31(11):1529-1537. doi: 10.1177/0269215517705424. Epub 2017 May 3. PMID: 28466669; PMCID: PMC5652651.
Warwick-Edinburgh Mental Wellbeing Scalebaseline, 6 weeks post randomisation, 6 months post randomisationMental wellbeing questionnaire Minimum raw score is 7 and the maximum raw score is 35; higher score means a better outcome
health care resource usebaseline, 6 weeks post randomisation, 6 months post randomisationhealth care resource use, covering general, stroke specific, and vision specific resources

Contacts

CONTACTChristine Hazelton, PhD
christine.hazelton@gcu.ac.uk0141 331 8181

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 8, 2026