What is polycarbonate eye glasses?

Answer 1

In layman's terms, it's a type of plastic that's practically shatterproof.
It's lighter in weight than standard plastics.

It was a product that was developed during WWII and it was used as a liner of gas tanks in bombers and jets, because it was something of a flexible material when a bullet pierced a gas tank, the pressure of the weight of the gas inside would sometimes actually seal up the hole. That's why it was developed initially.

Answer 2

Polycarbonate I would recommend with all rimless and semi-rimless mounts. Other plastics are considerable more brittle (and high index plastics often worse) and the exposed edges, grooves and drill-holes are safer in polycarbonate. Ordinary plastic CR39 lenses are safer than the glass that used to be the standard*. In full rims when to move to a higher index, (more expensive but thinner lens) will depend on Rx and the size of the frame. The bigger the lens size, the lower the Rx where the saving in thickness becomes appreciable. But there are higher index lenses than polycarbonate which are thinner still. What you should do depends on your funds, your Rx and your desired frame. * I wear glass lenses with my high Rx to get the maximum thinning benefit, 1.9 and 1.8 index. I note but accept the marginal safety risk.

Answer 3

Polycarbonate is a tough, dimensionally stable, transparent thermoplastic that has many applications which demand high performance properties like eye glasses.

Answer 4

polycarbonate, once callled bullet-proof glass, is used in safety glasses.

Answer 5

A type of lens that is not glass, but extremely scratch resistant. It's also lighter. It's also thinner.

Answer 6

A type of plastic!

http://www.total-knowledge.com/~willyblues/

Answer 7

plastic lenses that are very very hard to break! easily scratched though, get them coated... good ones for children or people who play sports.

Answer 8

eyeglasses not made from glass.

They are safer, they don't shatter.