See, so both the places I have gone make pretty clear that VT doesn't treat dyslexia. I feel pretty lucky, I must be goign to pretty decent/upfront places.
Our VT dr was also very up front about this, as well as our regular eye dr. However I think it's worth noting that I've "met" several parents online who's children are dyslexic and who have benefited from vision therapy; I think that what happens is that it's not unusual for some children to be dyslexic and also have visual challenges - so VT isn't curing the dyslexia, but it is helping the children with another area of challenge.