Viewing Strategy Training in Children With (Cerebral) Visual Impairment
- Conditions
- Vision, LowVision Disorders
- Interventions
- Behavioral: Viewing strategy training
- Registration Number
- NCT05600140
- Lead Sponsor
- Royal Dutch Visio
- Brief Summary
Viewing strategies are strategies used to process visual Information. Many children with visual impairment seem to lack systematic viewing strategies. However, it is unknown how viewing strategies differ between children with normal vision and children with (cerebral) visual impairment. In addition, viewing strategy training is often adopted in clinical practice, but till date there is no scientific evidence about effectiveness of this approach.
The current project has two goals: (1) to measure viewing strategies used by children with normal vision, children with ocular visual impairment and children with CVI, and (2) to evaluate whether training viewing strategies results in more efficiënt visual Information processing.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- RECRUITING
- Sex
- All
- Target Recruitment
- 60
Not provided
Not provided
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description Group A) early training group Viewing strategy training T0 = baseline measurement T1 = posttest (within two weeks after training) T2 = follow up measurement (6 months after training) Group B) late training group Viewing strategy training T0 = baseline measurement T1 = test-retest reliability and natural development (over period 1 1/2-2 months after T0) T2 = posttest (within two weeks after training)
- Primary Outcome Measures
Name Time Method Changes in visual search accuracy after training Group A: Day 0, Month 2, Month 8; group B: Day 0, Month 2, Month 4 Accuracy during conjunction search
Changes in reading accuracy after viewing strategy training Group A: Day 0, Month 2, Month 8; group B: Day 0, Month 2, Month 4 Radner reading test
Changes in reading speed after viewing strategy training Group A: Day 0, Month 2, Month 8; group B: Day 0, Month 2, Month 4 Radner reading test
Changes in visual search speed after training Group A: Day 0, Month 2, Month 8; Group B: Day 0, Month 2, Month 4 Speed during conjunction search
Changes in saccade amplitudes during reading and visual search after training Group A: Day 0, Month 2, Month 8; Group B: Day 0, Month 2, Month 4 Saccade amplitudes measured using Radner reading test and conjunction search
Changes in fixation duration during reading and search after training Group A: Day 0, Month 2, Month 8; Group B: Day 0, Month 2, Month 4 Fixation durations measured using Radner reading test and conjunction search
Changes in average distance between fixation points during conjunction search (EB-VSA) after training Group A: Day 0, Month 2, Month 8; Group B: Day 0, Month 2, Month 4 Average distance between fixation points using Radner reading test and conjunction search
- Secondary Outcome Measures
Name Time Method Changes in local visual selective attention after training Group A: Day 0, Month 2, Month 8; Group B: Day 0, Month 2, Month 4 TEA-Ch Speurtocht (total number of symbols found in 1 minute)
Changes in global visual selective attention after training Group A: Day 0, Month 2, Month 8; Group B: Day 0, Month 2, Month 4 Gestalt Closure (Kaufman-ABC), number of correct answers
Changes in visual identification speed after training Group A: Day 0, Month 2, Month 8; Group B: Day 0, Month 2, Month 4 'DST-Plaatjes Benoemen', number of pictures correctly named within 1 minute
Changes in WISC-V visual processing speed index (VSI) after training Group A: Day 0, Month 2, Month 8; Group B: Day 0, Month 2, Month 4 WISC-IV visual processing speed index
Trial Locations
- Locations (1)
Royal Dutch Visio
🇳🇱Nijmegen, Netherlands