At Dualens, we offer 3 different High-Index Lenses - 1.56, 1.60, and 1.67. The greater the index number, the thinner the lenses will be. All frames come with complimentary 1.56 lenses and are suitable for most low-prescriptions. For stronger prescriptions, it is not required, but highly recommended, to upgrade your lenses to either 1.60 or 1.67 lenses.

Aspheric lenses are designed to be slimmer, thinner, and lighter than conventional lenses as well as having the added benefit of zero vision distortion.