wordsmith, I had mine fly off my face years ago on a trip from California to Louisiana back to California. Back then, mid 70's I was 17, no helmet with a bandanna on my head. Me and a buddy were on my 1976 CB400F. Happened on the way back around sweetwater, TX. Went back and found the left lens on the side of the road. Rich had to drive from then on. My vision is 20/240, in other words I see at 20 feet what most people see at 240 feet. Layed on cement tables at the rest stop before El Paso, TX with 1 eye closed and holding the lens in front of my left eye to look at the stars. Out in west Texas the sky is big with lots of stars. What do they say, it's not the destination it's the ride. That was definitely an adventure, Yes Sir!!!