Exotropia Surgery

I like his surgeon, highly recommended. I do not know how many more surgeries to make him pass. I feel he needs them for the eyes to align but I am more discouraged with each transaction. I do not know now how vision therapy will be more effective since we have already done. Any advice / suggestions are welcome.

Only the doctor who was treating your son can not answer your questions in a responsible manner. None of us here knows the history or the extent of his mistake or what has been done to correct it. It is not uncommon for there to be several surgeries children grow. But really, you should ask your doctor and you also might want to consult someone like a second opinion. Most good doctors welcome it and do not take it as an insult to all.