Points well taken "Doc." I'm sure many more than really needed tinted visors have been approved for QBs, supported by team docs, over the years. You're right, I can't think of a very successful CFL QB who wore one. The more I think of it, even a clear visor, with the sun or lights reflecting off it, would make it difficult, if not impossible, most often, for defenders to be tipped off by the movement of the QBs eyes. I'm sure the main reason any player, at any position, wears a clear visor is to protect his eyes from fingers, anything that might be on those fingers, and the flying rubber bits from within the turf.