Vision standards are the same for both big and little aircraft in the USAF; 20/20, not colorblind, and no depth perception problems.
Then there are the small hurdles of becoming a US citizen, having a college degree, getting through the commissioning program, then making it through pilot training. And all must be accomplished prior to age 26.5.
You also might try the "joining the military" thread at the top of this forum.
Over to you, Canada........