"Dave Liquorice" wrote in message
ll.com...
On Sun, 24 Sep 2006 18:12:56 +0100, Graybags wrote:

Glass lenses are trickier to scratch, but will "pit" with impact, and
will shatter if you fall on your face,

I try not to fall flat on my face it hurts the nose. If I do fall (a rare
event) I find the natural action of gazing ones hands or rolling causes
the glasses to fly off and, very occasionally, shatter elsewhere.

This is great until the time when, for whatever reason, your hands fail to
stop the fall (remember the vast majority of spectacle wearers are elderly
with weak limbs etc) or something flies straight at your lenses.