Thanks, Kriston, this is what the doctor told me, too:

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it is good for eyes for people to choose to go cross-eyed. It strengthens the muscles. Contrary to what moms used to tell kids, your eyes won't stick that way in real life (normally!).


And thanks EandCMom, you answered my question. The kids start out at a high percentage b/c it's set to an easy level.

FWIW, DS loves the vision therapy, except for the one exercise.