Assessment of Visual Dyslexia Remediation Protocols - Dyslexia REMEDIATION

Study Overview
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Brief Summary
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Dyslexia is first described as a phonological deficit. Several studies report a neurovisual deficit in dyslexics. Some dyslexics have a visual deficit without phonological impairment, others have a pure phonological deficit, and still others have both types of deficits. From this observation the idea emerged to propose specific remediation protocols for people with visual impairments and to assess their effects on reading. At the theoretical level, if visual stimulation is able to improve reading performance, it is the demonstration of the existence of visual origin of dyslexia. At the clinical level, such a result not only opens the prospect of a different and more adapted rehabilitation for these types of dyslexia, but also the prospect, if the visual deficits are pre-existing to the learning of reading, to use them for early diagnosis and management.

Official Title
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Assessment of Visual Dyslexia Remediation Protocols - Dyslexia REMEDIATION

Conditions
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Dyslexia

Intervention / Treatment
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* Behavioral: visual stimulation with I pad
* Behavioral: visual stimulation with lamp


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Male or female Aged 8 to 12 Diagnosed dyslexics Normal or corrected to normal vision Legal guardians of children subjects providing their free, informed and written consent to participate in the study; With the child also giving orally his consent to participate. Exclusion Criteria: other neurodevelopmental problem strabismus, amblyopia For the glasses (group 2) : epileptic child are excluded

Ages Eligible for Study
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Minimum Age: 8 Years
Maximum Age: 12 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Basic Science
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: remediation group 1<br>dyslexic children | Behavioral: visual stimulation with I pad<br>* At the beginning of the study, for baseline condition, children will do 4 tests (visuo-spatial perception test, visual attention span, visual research, phonology tests). In the first group of the study, the children will do visual research exercises on I pad 10 minutes per day during one month = remediation. They will also do 4 reading aloud tests, once a month, for 3 months. The remediation exercises will be realized during the first, second or third month.<br>|
| Experimental: remediation group 2<br>dyslexic children | Behavioral: visual stimulation with lamp<br>* At the beginning of the study, for baseline condition, children will do the 4 tests like group 1. In the second group of the study, the children will do reading aloud tests, with lamp adjusted with different parameters = remediation (passive visual stimulation of a specific frequency believed to promote visual processing of written symbols).<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| reading performance | change in reading time | for arm 1: at baseline at 1 month at 2 month at 3 month For arm 2: 4 times in the same day, 4 consecutive reading sessions with a break in-between of minimum 5 minutes | 
| reading performance | change in number of errors | for arm 1: at baseline at 1 month at 2 month at 3 month For arm 2: 4 times in the same day, 4 consecutive reading sessions with a break in-between of minimum 5 minutes | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| score of Elementary Visuo-Spatial Perception test | comparisons of score of (lengths, sizes, angles and relative positions within and between objects). Minimum score = 36 and maximum (better) score = 72 | one time at baseline | 
| visual attention span | number of letters identified in a single ocular fixation (200 ms) | one time at baseline | 
| Visual search time | average visual search time of symbols versus colored objects | one time at baseline | 
| performance score on the phonology tests (EVALéo 6-15 = Evaluation of written language and oral language 6-15 years) | metaphonology = removal of phonemes. Minimum score = 0 and maximum (better) score = 20 | one time at baseline | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Dyslexia, Remediation, Visual attention span, Visual search