I don't have a current prescription, or a spare pair of bifocals. My spare pair of glasses is only for closeup vision (being the prescription for the bottom half of my bifocals) Now mind you, I'm not blind. Just everything is now totally soft-focus. My field of clear vision is under five inches uncorrected, and about a foot with the backup "computer" glasses.
If I could find a cooperative and not wildly expensive eye exam, that would give me not only a prescription but also the "pupil distance" I could order new glasses online at an affordable price. But pretty much any commercial place won't give you that piece of information, because they want to sell you glasses for