Whether you wear contact lenses or glasses to improve your day-to-day visual abilities, the only real difference between us ...

Comfortable Wearing: The glasses frame comes with clear lenses and made of reinforced composite frames that won't hurt your eyes. Reinforced metal hinges, anti scratch lens, durable and easy to clean.

A progressive lens design is like a bi- or tri-focal lens in that it corrects more than one vision problem at a time. However, these lenses have no visible lines, improving the cosmetic appearance of ...

3D-printed lenses fresh (and wet) from the printer look clear, but have tiny surface imperfections ... flat side of the lens to a smooth piece of glass. Or bond the backs of two lenses together ...