You can find more information about visual dyslexia at dyslexiaglasses.com/visualdyslexiasolution.html if your daughter describes any visual problems that cause reading difficulties or you can eliminate visual dyslexia as causal if the discussion is negative for visual problems.
Has anyone had luck with these types of glasses? It looks like something similar to irlen syndrome to me and I know that most major dyslexia associations don't believe that colored lenses actually work. $220 is a lot to spend for glasses unless they really work.
