The University of Liverpool

Professor Fiona Rowe




Stroke Research

Vision In Stroke (VIS)


(VIS) summary

Visual Impairment in Stroke: Intervention Or Not (VISION)











VISION is a clinical trial to compare the effectiveness of prism glasses, visual search training and standard care (information only) in patients that have a homonymous hemianopia following a stroke.

Contact Details: Collaborative team










The trial is sponsored by The University of Liverpool, funded by The Stroke Association and coordinated by The University of Liverpool Clinical Trials Research Centre.

VISION website:





IVIS is a research programme with four objectives.

1. Identify different questionnaires available for people to tell us about their visual problems and identify different treatments available for eye movement problems.

2. Determine how frequently visual problems occur and what happens over time.

3. Identify issues faced by stroke survivors relating to visual problems.

4. Plan trials of treatments for eye movement problems following stroke.

IVIS website:

Core outcome sets for stroke/vision screening and assessment: Protocol link.



This study addresses four key questions.

1. How much unmet need is there in post-stroke vision services?

2. Is there a clear care pathway for vision care in stroke survivors?

3. What are the variations in post stroke vision care, and how might they be addressed?

4. What is best practice in post stroke vision care, and where are examples of where such care is implemented?

Final report

Lay summary

Research findings

Thomas Pocklington Trust Research Findings:



We aim to establish three core outcome sets relevant to the treatment of amblyopia, strabismus and ocular motility disorders which primarily reflect the interests of patients but also clinicians, researchers and commissioners in order to facilitate decision-making by all stakeholders. Our research question is 'what are the core outcome measures deemed valid and important by patients, but also deemed relevant to healthcare providers?' Specific objectives are to 1) identify a list of outcomes previously reported by researchers and clinicians in studies of the treatment of amblyopia, strabismus and ocular motility disorders from a systematic review of the literature, determine the heterogeneity of outcome definitions, the number of differing measuring instruments used and the specific ways in which they differ, 2) identify outcomes from the perspective of patients in order to augment the list generated from (1), 3) determine the most appropriate method of measurement for each important outcome, 'how' the outcome is measured and 'when' to determine the outcome, and 4) prioritise and reach consensus regarding the most important outcomes from the perspectives of patients and clinicians into a core outcome set - the 'what'.

The protocol file can be accessed here.

Impact of Visual Impairment after Stroke (IVIS)

Care Provision, Unmet Need and Good Practice in Post-Stroke Vision Services in the UK

Development of core outcome sets for clinical research and practice in amblyopia, strabismus and ocular motility disorders

Dr Fiona Rowe

University of Liverpool

Chief Investigator

Prof Catherine Sackley

University of Birmingham

Dr Alex Pollock

Glasgow Caledonian University

Dr. Marta García-Fiñana

University of Liverpool

Dr Avril Drummond

University of Nottingham

Dr Rachel Breen
University of Liverpool

Ms Carmel Noonan

Walton Centre for Neurology and Neurosurgery

Dr Graham Barton

Warrington and Halton Hospitals NHS Foundation Trust

Mrs Stevie Johnson


Ms Janet Rockliffe



Mrs Claire MacIntosh

Oxford Radcliffe Hospital