Our DS was diagnosed with a "squint" or "lazy eye" when he was 8 months old. We saw the specialist (who by the way is AMAZING, if you are in Northland I can highly recommend!) when DS was almost 1, he advised us to patch DS's strong eye every day after his day sleep when eyes were refreshed, and he was to leave the patch on for at least an hour. After 6 months of doing this the specialist was happy with the progress, so decided to do corrective surgery. DS was 22 months when he had it done. Basically they cut the muscles in both eyes, and realign them so they are straight. Sounds crazy scary but it was an amazingly quick procedure. 2 hours from being admitted to leaving the hospital and DS was playing on the playground at McDonalds! We now have follow up appointments every 6 months, there is a chance they may want to do the surgery again when he is older but we for now the surgeon is very happy with his 100% allignment and 20/20 vision.
The one piece of advice I can give is to follow everything the surgeon recommends to a tee. We were told that so many surgeries are delayed because parents are lax with patching etc. Oh and when your little man is screaming down the hospital because he doesnt want eye drops, dont worry that anyone is judging you. They have either been there before, or will be there very soon!!!
Good luck with getting it all sorted!!