The Stroke Vision App: A Screening Tool for Visual Stroke

NHS Trust

Status: Unknown

Conditions: Stroke; Eye Abnormalities

Treatments: Procedure: Visual field assessment to confrontation; Procedure: Formal Perimetry (Goldman or Octopus visual Field); Device: Digital shape cancellation assessment; Procedure: Visual inattention assessment to bilateral stimuli; Device: Digital tumbling E visual accuity assessment; Procedure: Albert's visual inattention test; Device: Digital line crossing assessment; Procedure: Star cancellation visual inattention test; Device: Digital visual field assessment

Study type: Interventional

Funder types: Other

Identifiers

NCT02539381

GN15NE064

Details and patient eligibility

About

Visual impairment can affect up to 70% of stroke survivors, but many do not have their vision adequately assessed in hospital. An unidentified visual defect can cause significant problems for recovery and quality of life. The Stroke Vision app (an application currently scaled for a 10" Android tablet) has been developed to act as a screening tool for visual problems in stroke survivors; to help identify visual problems earlier and thereby improve rehabilitation outcomes. The app includes a suite of tests for assessing the patient's acuity, their visual fields and to aid in the identification of visual neglect / inattention. Furthermore, it includes educational information on visual stroke in order to better educate staff, patients and their carers. This study seeks to validate the novel digital assessments included in the Stroke Vision app against the current methods used for screening (clinical examination by confrontation field testing). Both screening measures will be compared with the gold standard methods for visual assessments, Octopus perimetry for fields and paper-based methods for visuospatial neglect

Enrollment: 62 estimated patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• All patients referred to Visual Stroke Orthoptic Clinics
• All patients with stroke or stroke-like visual problems (for example, but not limited to bitemporal hemianopia caused by pituitary adenoma) referred to the neuro-ophthalmology clinics.
• Consent Provided

Exclusion criteria

• No spoken English
• Unable to provide consent
• Profound cortical blindness

Trial design

Primary purpose: Screening

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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62 participants in 3 patient groups

Gold Standard Assessments

Other group

Description:

* Formal perimetry (Goldman or Octopus visual field) * Albert's visual inattention test * Star cancellation visual inattention test * line bisection test * These are performed as part of the routine assessment in the visual stroke orthoptic clinic and neuro-ophthalmology clinics. * The time to perform the assessments or if the participant is unable to complete the assessment will be recorded. * Researcher will record a score (0-10) to quantify the participant's compliance

Treatment:

Procedure: Star cancellation visual inattention test

Procedure: Albert's visual inattention test

Procedure: Formal Perimetry (Goldman or Octopus visual Field)

Usual Clinical Screening Practice

Other group

Description:

* Visual field assessment to confrontation * Visual inattention assessment to bilateral stimuli * The time to perform the assessments or if the participant is unable to complete the assessment will be recorded. * Researcher will record a score (0-10) to quantify the participant's compliance

Treatment:

Procedure: Visual field assessment to confrontation

Procedure: Visual inattention assessment to bilateral stimuli

Stroke Vision App

Other group

Description:

* Digital tumbling E visual accuity assessment * Digital visual field assessment * Digital line crossing assessment * Digital shape cancellation assessment * The time to perform the assessments or if the participant is unable to complete the assessment will be recorded. * Researcher will record a score (0-10) to quantify the participant's compliance

Treatment:

Device: Digital shape cancellation assessment

Device: Digital tumbling E visual accuity assessment

Device: Digital line crossing assessment

Device: Digital visual field assessment