The Canadian Journal of Optometry published an article in French last year that questioned the scientific evidence for the impact of vision therapy on scholastic learning abilities. The article was translated into English by Dr. Charles Boulet, and that translation is available here.
This was followed up by Letters to the Editor of the CJO, which you can read in a subsequent issue of the journal on pages 9-23. It includes a letter from Dr. Ida Chung, President of COVD. It also resulted in a two part rebuttal article that you can access here.