Core Outcome Measures in Effectiveness Trials

Impact of Visual Impairment after Stroke (IVIS)

General Information

This research programme has 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, and
4) plan a trial of treatments for eye movement problems following stroke. This new study will help us find out what problems people experience with their sight after a stroke, how we can get better at testing for these problems and what we should do to help.

Prof Fiona Rowe
Department of Health Services Research
University of Liverpool

Further Study Information

Current Stage:
January 2013 - 2020
Funding source(s):
NIHR Fellowship

Health Area

Disease Category
Eyes & vision

Disease Name
Visual impairment after stroke

Target Population

Age Range
18 -


Nature / type of Intervention


Consensus meeting
Delphi process
Nominal group technique (NGT)
Systematic review

This proposal involves both qualitative and quantitative research methods.
Cochrane systematic literature reviews with nominal group analysis for reaching consensus.
Biographical narrative interview techniques to determine impact of visual impairment.
Prospective comparative case series comparing observations of stroke survivors with different types of visual impairment to provide data on the prevalence of visual impairment following stroke.
Prospective cross section study to determine impact of visual impairment utilising patient reported outcome measures at a given point in time.
Prospective cohort study to monitor those with visual impairment over a minimum 12-month period to determine long-term visual morbidity.

Stakeholders Involved

Academic research representatives
Clinical experts
Consumers (caregivers)
Consumers (patients)
Members of a clinical trial network.
Patient/ support group representatives
Policy makers
Service providers
Service users
Study investigators

Study Type

Recommendations for outcome measures (measurement/how)
Systematic review of outcome measures/measurement instruments

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