I wear glasses with a pretty warped vision thru the extreme edges, and a very stong astigmatism prescription. I have never had any trouble with either eyeglass mounted or helmet mounted mirrors. What you must do is get an arm on the lens attachment which is LONG enough so that the mirror is in your normal field of vision when you look straight ahead. What these manufacturers do is make a very short extender; and they try and compensate for this by making the lebs very big; some even make it convex to enable you to see a wider image. WRONG!

You should have the mirror about 2 or 3 inches in front of your left lens. Get a small mirror that will be light enough to sit on a extender that long. When ya need to look behin you you can jiggle your head a little bit and get the whole view you need. I can't recall the brand name but one sticks on to your helmet by popping into two holes that are on a plastic base that stays on your helmet permanently.The extender and mirror can be detached if you wish.

I don't like handlebar mirrors. At the very moment you need them the most--when you are making a turn or shifting left/right-- they are not showing the area directly behind you. They are so for from your eye they must be big and heavy; and the attachment to the bike gobbles up precious handlebar space.

There are also mirrors that attach to your left wrist using a elastic band and plastic mirror. Same problem...to use it you must take your hand off the bar.

Go with the helmet mirror, even if it means you might have to change the size of the lenses on your glasses. But mine are small, so I am not sure what your problem is.

Focus and center the mirror by facing a wall mirror and placing the helmet mirror in your upper left field of vision, until it reflects the exact same thing you saw in the former space occupied by the mirror on the wall. You should see over your shoulder and maybe just graze your left ear.


roughstuff