Glass had no overlay. You don’t see reality and the screen at the same time. It is reality or the screen. (Just like a phone that isn’t running an AR app) Loo

Glass had no overlay. You don’t see reality and the screen at the same time. It is reality or the screen. (Just like a phone that isn’t running an AR app) Looking at the screen does obscure your perception of reality because your eye has to change focus. The little prism was transparent but it may as well have been translucent because you couldn’t focus on the screen and the world at the same time.