Don Bruder wrote On 10/19/05 09:42,:

The part that grabs my attention (as a wearer of corrective lenses not
in contact with the eyeball) is that whole "scratch resistance" thing...
I'm forever cussing at the cost involved in replacing a set of glasses
due to the "fog" of scratches that sooner or later collect on my lenses,
regardless of how carefully I handle them.

If this stuff can be worked into lenses, I'd be thrilled to have a set
made out of it, since it might *FINALLY* mean I'd get to look through
scratch-free lenses for more than the first few weeks after getting a
new pair...


A PS, I used to demand glass lenses instead of plastic for that reason,
glass is much less prone to scratching than plastic. I finally switched
because, well, I am slowly going blind and the damm things weighed a ton.

What I discovered, that helped tremendously, is the method I and others
used to clean their glasses was the problem. Most folks whip out a soft
cloth to clean them, which is exactly what causes the scratches. You are
basically grinding the lenses with small dust particles embedded into
the cloth.

I switched to always cleaning them by washing them first with soap and
water. The soap removes any grease that is holding the dust in place.

Think of it this way. Unless you are grinding with a shower of particles
in your face, you're not getting the scratches while you are working.
Anything strong enough to scratch even plastic, you would feel if it
hit you in the face.