Most behavioral or developmental ophthalmologists tend to love to add minute prisms to glasses. Prisms add a curve that should change the way eyes track together, and are used when the two eyes don't work well in conjunction with each other. That said, I took my son to one that used to be the Secretary of COVD, and he was annoyed that the previous doctor had used prisms, because they don't fix the problems...they are just adaptations, like wearing glasses to see far away.
The question is, did he also give you any kind of vision therapy along with the glasses?
