Assessment of Visual Dyslexia Remediation Protocols - Dyslexia REMEDIATION

Not Applicable

Recruiting

• Conditions: Dyslexia
• Interventions: Behavioral: visual stimulation with lamp; Behavioral: visual stimulation with I pad

• Registration Number: NCT05514457
• Lead Sponsor: Hospices Civils de Lyon

Brief Summary

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.

Detailed Description

Not available

Basic Information
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Recruitment & Eligibility
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Study & Design
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Trial Locations

Study Timeline

• Study First Submitted: 2022-08-05
• Study First Submitted QC: 2022-08-22
• Study First Posted: 2022-08-24
• Study Start: 2022-11-17
• Status Verified: 2024-01
• Last Update Submitted: 2024-01-29
• Last Update Posted: 2024-01-30
• Primary Completion: 2025-02-17
• Study Completion: 2025-02-17

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 64

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.

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Exclusion Criteria

• other neurodevelopmental problem
• strabismus, amblyopia

For the glasses (group 2) : epileptic child are excluded

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
remediation group 2	visual stimulation with lamp	dyslexic children
remediation group 1	visual stimulation with I pad	dyslexic children

Primary Outcome Measures

Name	Time	Method
reading performance	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	change in number of errors

Secondary Outcome Measures

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

Trial Locations

Locations (1)

Centre de Recherche en Neurosciences de Lyon; 🇫🇷 Bron, Rhone Alpes, France