There's a connection between tracking, letter reversals, reading problems, and vision issues. Vision therapy can help to resolve or remedy these deficits tremendously. My pg/ ds 5.5-year-old was born with visual deficits and has been in vision therapy for the last two years to correct it.
My pg/ ds son was resistant to reading and phonics. He's been a whole language learner. Now we're trying to backtrack to phonics so he can break down words phonetically and be able to advance his reading skills.
Reading is a learned skill. I think some kids have an easier time learning through hearing and with phonics than others. Other kids have an easier time learning by sight and with whole language. These kids rely on memorizing words or sounds based on sight.
The problem, of course, is when whole language learners need to move beyond sight words and struggle to break down large, multi-syllable words. It's not as natural or necessarily easy for the whole language learners. This is one of the reasons why whole language learners may spend a longer time with picture books than others.
I found this website on
http://www.fonetiks.org/foniks/ to be somewhat useful for practicing phonics.