Personally, I don't like the way that the HydroOptix marketeers make a connection between 'situational awareness' and vision. Awareness is not controlled by your eyes... it's about your brain. That strikes me as false advertising. It's missrepresenting the mask as a safety innovation.
OK DD, let's conduct an experiment; from a common human perspective, turn and look out your anus. That is serious tunnel vision. Your brain knows where it is located, but does your brain know what is a foot or two outside of your hip bones?
Many people can not process the periphery of the view from a Big Eyes mask, but for those of us who can process the periphery, would not the increased field of view give the brain more information to process, yielding a more complete awareness of the situation? :kiss2: