You did not get an Rx for your vision. What you got was an invoice with the
medical diagnostic codes on it, which for some people (not many) can be used
for insurance or tax purposes.

You are entitled by law to get a copy of your Rx if you request one. It is
generally good for 1 year (but thee are exceptions). Never leave the eye
exam office without a copy of your Rx.

Those numbers don't tell you anything specific. If you're in the US, he's
required to write your prescription out and give you a copy. He isn't
required to write out your visual acuity (20/x) in most states, unless
you're filling out a form eg commercial drivers licence.

If you tell us your eyeglass prescription, and your age, we can make a
reasonable guess at your visual acuity, assuming you don't have amblyopia.
Your doctor's record will have that information, and you're entitled to a
copy of it on request, or the nurse will probably read it off for you.

If you have hyperopia, you're farsighted, and many of those folks don't need
glasses for far away vision. Instead, they need more help up close and it's
often better to make their glasses a little blurry far away.

By age 45, most people need glasses to see up close and those lenses always
make distance vision blurry.

-MT