too close to the eye. suspension of disbelief is fine. I rarely go for full realism either. But it has to be clear that in this world everything will work. So we are still loosely constrained in some way to physics. The fact that we were not all certain what it was supposed to do is a sign that it wasn't quite well designed. Just bending it out a bit would fix that confusion - Somewhere between those mirrors on bike helmets and what he had here.