Hi Lee
I had my squint surgically "corrected" when I was 18 months old... it was the worst thing I had ever had done to me! The doctors thought that it was the best way to treat the problem at the time... invasive surgery!! the bast way!! I would hate to have seen the worst way... it would probably involve several pounds of nails stuffed into a block of semtex. Now, 34 years later I'm living with the after effects... particularly weak muscles in my left eye, but that can only be expected after what they had been through. But it's not the doctors who have to live with that.
There are more natural treatments, the Bates Method of eye exercises could work wonders. I only wish I had been given the option to try it. A search on the internet for "treatments for strabismus" will give you a start.
Surgery is a last resort. If the exercises don't work what have you lost?
If all else fails... learn to fly in the States. The FAA are far more pilot friendly, I have an FAA Class 1 even with my amblyopia.
BlipOnTheRadar