Christian Boer designed the typeface Dyslexie because “reading printed text is so fluid and transparent for most people that it’s hard to imagine it feeling any other way. Maybe that’s why it took a dyslexic designer to create a typeface that optimizes the reading experience for people who suffer from that condition.” This link has a description of the typeface and an interesting video about how to make type more readable, even for non-dyslexics.
Interesting idea.
When I was studying for my CELTA (EFL teaching), we learned that English is one of the few written languages where words can be correctly deciphered even when the internal letters are mixed up, as long as the first and last letter remain in proper order.