Developmental dyslexia affects almost 10% of school-aged children and is a significant public health issue. It is widely acknowledge that dyslexia involves language and sounds and issues relating to the conversion between written and spoken language.
However, as the author of the study points out:
Numerous scientific studies have also documented the presence of eye movement anomalies and deficits of perception of low contrast, low spatial frequency, and high frequency temporal visual information in dyslexics. Anomalies of visual attention with short visual attention spans have also been demonstrated in a large number of cases. Spatial orientation is also affected in dyslexics who manifest a preference for spatial attention to the right. This asymmetry may be so pronounced that it leads to a veritable neglect of space on the left side.
This is why eye doctors, especially developmental optometrists (who already have experience and training in treating vision related cognition problems such as visual attention deficits and other visual information processing deficits using eye-brain rehabilitation and vision therapy) need to be involved in providing care for dyslexics.
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Citation:
Developmental Dyslexia and Vision Clin Ophthalmol 2013 May 14;7()869-881, P Quercia, L Feiss, C Michel
