Seems odd to have the strabismus without any therapy. Strabismus can also cause amblyopia where the brain learns to ignore input from the wandering eye. I wonder if the opthamologist specifically tested for 3D vision (also impacts motor coordination, writing, and such.)
My DS7 didn't consistently sit and read until his amblyopia was addressed through patching (caused by astigmatism rather than strabisums.) Line and word tracking is still a problem, but is coming together. Basically, fine motor, gross motor, reading accuracy are all a bit delayed for him. But vocabulary, comprehension, etc. are quite high.
He fatigues much less reading now. One of the biggest aids while he was still patching was to use a visual aid to follow a line of text. His finger ended up being tiring, but a bookmark or a playing card just under the line being read was a huge help.
