On the front, you have that star of the show -- a small little glass square. That's the screen, and when you put the glasses on you can adjust them so that it sits slightly above the top of your right eye. If worn right it really doesn't obscure your line of vision. No, I haven't been walking into walls. In fact, when I picked up my Glass, a Google employee (or Glass Guide) fit me for them and showed me how to slightly glance up to see the screen. You can also adjust or swivel that screen when you have it on to bring it closer in or out from your eye.