On my camera, the viewfinder (the thing you use to look "through" the lens) is a screen. You can alter dioptry, which, AFAIK, is the equivalent of "moving the s

On my camera, the viewfinder (the thing you use to look "through" the lens) is a screen. You can alter dioptry, which, AFAIK, is the equivalent of "moving the screen back". Essentially, you can have the screen visually as close or far as comfortable. Odds are, these glasses have that built-in. And it's going to be a lot better for your eyesight than staring at a screen 50cm away from your face.