[OkieGentleman]

My optometrist recommended what he called electricians glasses. Electricians use this configuration for working over their heads with wiring in junction boxes.
The part of the lenses that is for close viewing, is in the top of the lense. When you want to aim your pistol, your head is tipped down and not up at the ceiling, which gets uncomfortable. I also brought a new number 2 pencil with an eraser and a couple of straight pens. I put a pin in the eraser and held the pencil at arms length while we got the prescription for the distance correctly set. I liked that set up much better than having to tip my head back and look through my bifocal at the bottom of the lense. My optometrist only charged me about $20 for the second prescription for the electrician style glasses.
The nice thing about this setup is you can do all of your regular things like drive and other stuff and just tip you head down for a clean focus on a close object. Also great for working over your head.