DFD Progressive Lenses from http://atglensorder.com
DFD for DUAL SIDE FREEFORM DESIGN!
A Patent from ATGBrokers from 2014!, that gives the possibility to produce progressive lenses 2 base curve less, as normally every one other freeform Process produces it can!
Ideal for every semi-frame or rimless frame!
The wider multifocal channel and thinner glasses!