Originally Posted by
ericy
I kind of had the reverse experience of a lot of the other posters here. I first tried a mirror that clips to the eyeglasses, and I could never get it adjusted properly. In order to see what was behind me, I kept needing to bobble my head around to get the mirror lined up properly to see what was behind me. It all seemed to depend on what hand position I was using, and how tired I was of keeping my head up, and it always took a couple of seconds to get to see what I was trying to see.
I put a bar-end mirror on my current cycles - it is convex, so the field of view is pretty good, and I can see what is behind me with just a quick glance. Usually I only need to tweak it just a little bit when I first start out, and I am good to go.
I tried this too and settled on the Italian Bike Mirror for a while with it's very clean installation. Almost all of the bar mounted mirrors are convex. Convex is a major problem if you ride on roads with fast moving traffic. A car can be 5 seconds behind you and moving 60mph that would put it almost 550 feet behind you. In that convex mirror it's tiny and very hard to see. In this situation a convex bar mounted mirror is almost worthless, I went to the Bike Eye for on the bike (non convex) and back to the Take-a-Look Compact version for the same reason.
J.