I was at a trade show today (not cricket) and was shown some sunglasses that literally were bulletproof, the lenses having taken shotgun pellets and 22 rounds without any penetrating. They also survived being hit with a hammer and a police riot baton. Apparently you can get them with prescription lenses too. Not too bad style wise either.
They were Wiley-X not all in the range were bullet proof but I was pretty impressed. Must admit, seeing them made me think about Mark Boucher.