I've seen a couple of posts before about shooting with glasses, but I thought I'd share my experience and the new pair of glasses I just received.
I have a pretty low prescription, I don't even legally need glasses to drive, but every bit helps in the woods. I've been making do for several years hunting with my everyday pair of glasses. I could never get the contact thing down and since I don't need to wear them everyday, I was always worried I'd have issues in the field.
The only major thing I had to change when I started shooting with my glasses, was turning my head more square to the target. I was using the nose to feather as a final anchor, but with my head turned that much, I could just barely see the target through the lens of my dominant eye. If I was off even a little bit, my non-dominant eye would take over and I would start shooting to the left. (right handed, split vision aiming). I lost the 3rd anchor by squaring my face, but gained much better focus shooting with the glasses.
I finally sprung for a pair of wrap around sunglass frames, with clear prescription safety lenses. These things are great. They fit nice and tight to my face. With my regular pair of frames the string would just touch the bottom of the frame, pushing them up slightly. Wasn't much of a problem, but every once and a while I'd jostle them out of place. I also have an improved range of peripheral vision. Can't wait to give these a try this fall.
You can also note the "modifications" I started making to my hats. I got tired of either lifting up the brim slightly or turning it around, and took a pair of scissors to the brim.