I am not familiar with transport Canada standards but YOU need to become familiar with them BEFORE you have any surgery. This may give you a start:
https://www.tc.gc.ca/en/services/avi...e-surgery.html
But you probably need to at least TALK to a Canadian AME.
There are issues with someone with one eye being 20/15 and the other 20/200. Is the 20/200 eye fully correctable? If not, what degree of correction is possible? Is the “bad” eye totally repressed normally, meaning certain types of depth perception may be inoperative? Not necessarily a show-stopper under US rules (heck, we certify one-eyed pilots) but if it’s sort of been the unused spare for awhile and you correct it, is that going to cause double vision? Or will it still be repressed. Or was it ever repressed. If not, maybe no problem whatever.
Basically, WHAT ARE THE POSSIBLE OUTCOMES UNDER TRANSPORT CANADA’s RULES.
I’d talk to a good Canadian AME before anything else.