I've been wearing glasses since I was a kid for near-sightedness and now I have progressive lenses to allow me to read up close without looking under my glasses. The progressives are fine but they are just too distorty and strange around the edges to wear while riding so I wear regular prescription glasses (and sunglasses) under my visor. This is fine unless I want to actually see anything detailed on the display or glance at a map or phone without pulling over and dealing with it. If you need reading glasses you know what I mean. After a recent long-distance motorcycle journey marred by these annoying stops, I found these things on Amazon:
https://www.amazon.com/gp/product/B099JM9F2M/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
StickTite Stick-On Bifocal Lenses are what they are, in case that link doesn't work. It seems they are popular with divers who have the same problem. They just stick on with water and mine have been on for over a month now. You wouldn't want to read a book with them and you won't be reading the rules on the back of a lottery ticket, but if I just want to check the time on the display on my Guzzi, which has some pretty small digits going on, they work great. Just a little boost when you need it.