willshak wrote:

bud-- wrote the following:

I have one acrylic window and several that are polycarbonate. I used
them for impact resistance. Polycarbonate (Lexan is a brand) is much
more impact resistant than acrylic. I believe polycarbonate is more
scratch resistant

It has to be. Eyeglass lenses are made of polycarbonate.

Polycarbonate eyeglass lenses almost always have an anti-scratch
coating applied to them. Without it, they scratch as easily as CDs
and DVDs do, meaning much more easily than acrylic.