Generally speaking, everything will be what you think. You think your friends weird without glasses just because you have been used to the appearance when they wear glasses. Actually, wearing glasses for long time will affect the shape of your eyes, especially the muscle between your nose and eyes. That is to say, if someone has been wearing glasses for long years, and when he put off the glasses, you will find the eyes have been sunk. Besides, you will find there are two marks between nose and eyes. On the contrast, if you have been wear glasses for short time, the shape of your eyes will not be effected and then you put off glasses, it will be just a little strange for a short time, say one hour, later you will know there is no difference between with glasses and without glasses. I just told you my personal feeling. Thanks.