Double side progressive lenses

Twice is the new individual progressive lens that delivers an exponential increase in visual acuity in all fields of vision. By taking account of all the individual parameters of relevance for the prescription (corneal apex-lens distance, pantoscopic angle, frame design and wrap angle) combined with information about the material and refractive index of the chosen lenses, it is possible to create a totally personalised lens, dramatically reducing the difficulties associated with getting used to progressive lenses.
Thanks to the distribution of power over both surfaces, Twice offers extremely sharp peripheral vision. 
Twice features a variable base curve, an innovative front surface providing the ideal optical geometry in all the areas of vision.
The outer surface has an incremental curve from the top to the bottom: the lower plus power in the distance area and the higher plus power in the reading area. The particularly flat outer surface also guarantees an excellent aesthetic result.