sounds very familiar to me. my DD had her first strabismus correction just before turning 3 yrs of age, the next just under 2 1/2 yrs later, the next 3 yrs later. ( None in the next 8 yrs.) Her second surgery I think was to correct one eye going up and the other out. maybe it was the third surgery. But it was a long time in between.

your description sounds just like her wandering. she's not seizure prone.