Mimi, I can't imagine using an eyeglass mirror. I, too, am blind in one eye. It happens to be my left eye, so having an eyeglass mirror on my left side wouldn't do me any good.

Given this situation, I cannot turn to the left to see traffic over my left shoulder, as I'd have to turn to see out of my right (good) eye. But I can, and do, look over my right shoulder.

I have a handlebar-mounded mirror that I got from the Rivendell website. It's wonderful. I think it's made by Ortlieb. I have one on each bike.