I wear glasses and side view mirror glare is a huge problem for me(at night, of course).
First fix was screen door screen cut to fit mirrors and velcro-ed in 4 corners. This Helped a lot. But The other night I came up with my ultimate fix. Adjusted mirrors out of bounds, but kept my 5" convex mirrors adjusted properly. Cant tell WHO is behind you, but can see when a car is coming up on you, so it is safe. My mirrors are 4 point towing mirrors(attached to door in 4 places) I guess you would call them. Framework is similar to "west coast mirrors" and my convex mirrors clamp on to that framework, Like a big truck has. It just totally solved my problem, now I can pay attention to whats in front of me, not behind me! Barry