visuele beperkingen blindness severe low vision
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: - persons must have a moderate to severe visual impairment (blindness or very low vision), defined by visual acuity below 0.3 (6/18) and/or a visual field less than 30 degrees; resulting functional consequences in daily live could be described as that persons are o in need of mobility devices such as the long (white) cane or a dog guide and/or o not able to make use of common signposting - persons need to have good orientation and mobility skills (which is operationally defined as being able to travel outdoors without the assistance of a human guide) - persons need to be able to travel safe (being able to cross a street safely, being able to assess possible risks and to react adequately etc.) - persons have to be aged 18 years or older - persons have to be capacitated - persons need to have a computer with Internet and e-mail at their disposal and they need to have basic computer skills - persons need to be able to keep an activity diary in accessible format - persons need to be willing to wear a GPS data logger while travelling or moving around outside the home during the defined periods (6 weeks in sum; for participants in the control group 10 weeks in sum)
Exclusion criteria
Exclusion criteria: - intellectual disabilities - additional motor / physical mobility impairments - (long-term) use of a navigation EMA prior to inclusion into the study - completely satisfied with the own level of (societal) participation - completely satisfied with the own frequency and / or quality of outdoor mobility / travel - no sufficient comprehension of the Dutch language
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| - participation (sub-scores USER-P) - perceived added value of the assistive device on problems of daily living (IPPA) | — |
Secondary
| Measure | Time frame |
|---|---|
| - independent mobility and orientation (*Independent Mobility Questionnaire*) - number and kind of traveled routes outdoors (travel habits / travel patterns) (activity diary and GPS data logger) - number and kind of activities performed outdoors (activity diary) | — |
Countries
Netherlands