Doing so scrolling on Facebook, I encountered an article on Anne Rice Facebook profile about this webpage. The article is This Man Invented a Font to Help People with Dyslexia Read. Basically, this man Christian made a font with really almost unnoticed differences in each letter but they help others to read better.
If you want to get it for free, you need to fill a simple form and you will receive it by email. It actually looks really good.
So check it out at: http://www.dyslexiefont.com/