I wear glasses and am very familiar with just about everything you people are mentioning. Here is what I have done and now do:

For shooting with a peep and a magnified sight, I used to remove my glasses (my vision is not very bad) but I had trouble seeing my arrows in the target.

I got a tip from George Ryals and I now push my glasses over to the left when I shoot and this puts my nose between the right pad and the lens for the right eye -- this allows all obstrictions to be taken out of the picture and I see fine. Looks a bit funny though to others[8D].

I believe the double vision someone mentioned is looking through the edge or frame which you might not be able to see, but it bends the light causing the double image.

I shoped around for glasses that sit deep to my face and have no lower frame (only a wire) -- this helped a lot and I cam almost shoot with them without moving them to the right, but it is right on the edge.

I hunt using a No-peep and with these new glasses, I can shoot without having to move them.

Hope this helps.