I have officially joined the ranks of the optically challenged and pick up my first set of glasses on saturday. I am wondering how this will affect my shooting. I suffer from astigmatism so don't have the option of using the diopter and although my astigmatism is very mild my natural shooting eye is the weaker of the two. I also won't be required to wear my glasses all the time, but those of you who do wear them, do you shoot with them on or off and how does this effect your ability to judge focus?