Not sure how it protects your vision. So, they say take an eye break to relieve the strain, presumably with focussing on a fixed point. These guys are saying that hey you can instantly focus on something far away and carry on working without even looking away from the screen! That doesn't sound like an eye break to me, and it doesn't sound like it protects your vision at all.

I mean, it looks pretty cool but I think their marketing department is not aiming it at my cynical self