but was wondering if theyd be able to tell
ItsAWing
I go to the opticians at Cranwell every 6 months for a contact lens check and each check is thorough. As the others have said I would say yes they would be able to tell.
However, as you are just in the process of applying it may be worth getting your AFCO to get in touch with the medical board and ask the right people for the right advice. It may/may not be possible for you to get corrective treatment done prior to final selection and initial officer training and certainly before you get to post grad training.
Your other posts state that you want to be an Officer and a pilot. To be blunt, your honesty/integrity may well be questioned during the selection process if you try to pull a fast one.
Good luck
SA