HEADLIGHT glare from approaching cars is practically eliminated by the cup-shaped aluminum shields shown on the left, which fasten onto regular spectacle frames.Link
Holes are cut a little to the right of the apex of the cones, which are one inch deep. When meeting a car, driver turns his head slightly to the right. This automatically cuts off the glare from the lights and enables him to watch the side of the road.
Holes in the sides of the cups aid wearer in watching cars at intersections.
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.