One of our members wrote that her Oakleys had shattered in an accident, leaving shards of lens embedded in her face, and that the paramedics told her that Oakleys were notorious for shattering. I wanted to find out myself about this because I need glasses, so I wrote that I would write Oakley and see what they said. Here is what their customer service person wrote me back:

"I receive hundreds of emails from military members thanking Oakley for protecting their eyes from shrapnel from improvised explosive devices. Oakley lenses are impact resistant and don't shatter. Perhaps the paramedics saw some counterfeit Oakley's."
Sincerely,