Dyslexic learners struggle with seeing individual letters clearly. They report that the letters appear fuzzy or shimmering. There is a useful font you can use freely called the Open Dyslexia Font. Crick have placed a link on their website so please feel free to follow the links below:-
http://www.cricksoft.com/support/clicker6/downloads/updates/open-dyslexic-font-mac.aspx – for Mac
http://www.cricksoft.com/support/clicker6/downloads/updates/open-dyslexic-font-win.aspx – for Windows