The Stroke Vision App: A Screening Tool for Visual Stroke

Recruiting

Phase N/A Results N/A

Trial Description

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

Conditions

Interventions

  • Formal Perimetry (Goldman or Octopus visual Field) Procedure
    ARM 1: Kind: Experimental
    Label: Gold Standard Assessments
    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
  • Albert's visual inattention test Procedure
    ARM 1: Kind: Experimental
    Label: Gold Standard Assessments
    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
  • Star cancellation visual inattention test Procedure
    ARM 1: Kind: Experimental
    Label: Gold Standard Assessments
    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
  • Visual field assessment to confrontation Procedure
    ARM 1: Kind: Experimental
    Label: Usual Clinical Screening Practice
    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
  • Visual inattention assessment to bilateral stimuli Procedure
    ARM 1: Kind: Experimental
    Label: Usual Clinical Screening Practice
    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
  • Digital tumbling E visual accuity assessment Device
    ARM 1: Kind: Experimental
    Label: Stroke Vision App
    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
  • Digital visual field assessment Device
    ARM 1: Kind: Experimental
    Label: Stroke Vision App
    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
  • Digital line crossing assessment Device
    ARM 1: Kind: Experimental
    Label: Stroke Vision App
    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
  • Digital shape cancellation assessment Device
    ARM 1: Kind: Experimental
    Label: Stroke Vision App
    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

Trial Design

  • Allocation: Randomized
  • Masking: Double Blind (Investigator, Outcomes Assessor)
  • Purpose: Screening
  • Intervention: Parallel Assignment

Outcomes

Type Measure Time Frame Safety Issue
Primary Accuracy of Stroke Vision Tablet App to support assessment of visual field defects when compared with visual field assessment to confrontation in standard clinical practice All assessments will be conducted following consent at standard clinical assessment visit No
Primary Accuracy of Stroke Vision Tablet App to support assessment of visual inattention defects when compared to visual inattention assessment to bilateral stimuli in standard clinical practice All assessments will be conducted following consent at standard clinical assessment visit No
Secondary Accuracy of Stroke Vision Tablet App to support assessment of visual field defects when compared with "Gold standard" formal perimetry assessments All assessments will be conducted following consent at standard clinical assessment visit No
Secondary Accuracy of Stroke Vision Tablet App to support assessment of visual inattention defects when compared with "Gold standard" Albert's visual inattention test, Star cancellation visual inattention test, Line Bisection test All assessments will be conducted following consent at standard clinical assessment visit No

Sponsors