Originally Posted by usafcct

I did same. Measured distance from eye to front sight and had my optometrists write a RX for a mono scrip for that measurement strong eye and distance for the other. Then went to one of the box eye shops and had safety glasses made. They were cheap as prescription glasses go. I think out the door was $45-50.
Put them on about 20 minutes before shooting, your brain will adjust. I don't even notice after that time. Unless I need to see some small details. I keep my regular glasses handy for that!