Visual field defects The visual field is everything a person can see when fixating on a point in space.
Conditions
Interventions
No therapeutic intervention is involved. Each participant will undergo SAP (gold standard) once as part of standard regular care. For SAP in this specific population, we use a binocular Esterman test.
Directly hereafter, the participant will perform SONDA-EMP once per eye, preceded by a short test-run to get acquainted with the test. SAP is part of standard regular care.In patients without prior ex
For patients with known visual field defects who are familiar with SAP (e.g. patients with glaucoma), SAP will not be repeated provided the test is deemed reliable, in line with standard clinical care
Data analysis of SONDA-EMP will be conducted after the study session
therefore, the results will not be accessible to the performing optometrist during the assessment. 
Sponsors
Universitair Medisch Centrum Groningen
Eligibility
Age
18 Years to 99 Years
Inclusion criteria
Inclusion criteria: ABI patient with VF loss: - Diagnosed with ABI, and VF defects on SAP - Visual Acuity (best corrected) 0.3 logMAR (or better) - Age: 18-80 - Informed written consentABI patient with VF loss: - Diagnosed with ABI, and without VF defects on SAP - Visual Acuity (best corrected) 0.3 logMAR (or better) - Age: 18-80 - Informed written consent
Exclusion criteria
Exclusion criteria: Severe cognitive, motor, or language impairments that prevent correct test execution. Visual acuity worse than 0.3 logMAR (corrected). Unreliable SAP-measurement upon repeat testing
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The screening performance: AUC and the sensitivity at 95% specificityThe output of the feedback questionnaire for SONDA-EMP compared to SAP. | — |
Countries
Netherlands
Contacts
Public ContactA.C.L. Vrijling
Universitair Medisch Centrum Groningen
Outcome results
None listed