How to Choose Eyeglasses Lenses?

Consumers in choosing lenses, the main principle is to follow a nice, safe fit.
Aesthetics: the lens to be thin, non-reflective, and difficult to dirty, wear-resistant.
Comfort: light, good optical properties, transmission capacity and can be strong dyeing.
Safety: Anti-UV, anti-shock (consistent with the U.S. FDA standards of safety tests), the lens is not friable.