Viewing Strategy Training in Children With (Cerebral) Visual Impairment
Vision Disorders, Vision, Low
About this trial
This is an interventional treatment trial for Vision Disorders focused on measuring viewing strategies, (cerebral) visual impairment, visual rehabilitation, reading strategies, visual search strategies
Eligibility Criteria
Inclusion criteria typically developing children with normal vision: Age 5-12 years linear distant visual acuity of 0.1 logMAR or better Verbal IQ above 70 Absence of developmental disorders or psychiatric problems like ASS or AD(H)D Inclusion criteria for children with ocular visual impairment: Age 5-12 years Children with linear distance visual acuity better <=1.3logMAR and >0.1 logMAR Intact central visual field (at least > 30 degrees) Children with a verbal IQ above 70 Absence of developmental disorders or psychiatric problems like ASS or AD(H)D Inclusion criteria for children with cerebral visual impairment: Age 5-12 years Linear distance visual acuity <=0.3 logMAR Having the diagnosis CVI (verified by ophthalmologists) Children with a verbal IQ above 70 Absence of psychiatric problems like ASS or AD(H)D Additional inclusion criterion for study 2 (evaluating training effectiveness): children with (cerebral) visual impairment should have an indication for viewing strategy training. Training should not be indicated if children have no problems performing academic tasks (i.e. when speed and accuracy of visual processing is within the normal range). The age range for study 2 is 5-9 years. Exclusion criteria: Children with VI: linear near visual acuity >1.0 logMAR Children with visual field defect < 30 degrees Children with a verbal IQ below 70 Children who attended a form of vision training in the past two years Children with psychiatric problems like ASS or AD(H)D Auditory impairment or language impairments Major life events during training
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Experimental
Experimental
Group A) early training group
Group B) late training group
T0 = baseline measurement T1 = posttest (within two weeks after training) T2 = follow up measurement (6 months after 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)