Dyslexia is characterized by weak phonological awareness and/or rapid naming skills. It is often accompanied by some visual processing difficulties as well. This article suggests that those visual processing differences are a result of dyslexia, not a cause of it. We know that the old colored overlays, etc are not effective in improving reading in students with dyslexia and this is likely why that is the case. We need to target the cause of dyslexia, instead of the symptoms, through interventions.
Visual System Differences in Dyslexia Do Not Cause Reading Problems
By Carolyn D. Cowen