POLYCARBONATE
Polycarbonate.
thin, lightweight, safe, UV protection, two-sided scratch resistance and great value." Dispensers of a certain age remember the 1980s when a material used in the aerospace industry and as the bullet-proof glass was first manufactured as spectacle lenses. "At that time polycarbonate was our only choice for a thinner, lighter lens," There were so many aberrations and rejections of this material. If you held the lens up to an Amsler grid you could see the distortion away from the clear 10 mm core. The only reason patients liked the lens at all was that it was their only choice for a thinner lens."