AKAY OPTİK SAN. VE TİC. AŞ.

2. Freeform Technology: It is a new production technology used in the production of lenses. With this technology, the progressive surface, which was previously processed by the raw material manufacturer on the front surface of the lens, is now processed on the back surface of the glass by Rx laboratory using very precise CNC machines. Using proper software, very good progressive lenses can be produced with this technology. In cases where the spherical, cylindrical and prismatic values are higher and the axis direction is not vertical or horizontal but in diagonal directions, the superiority of "customized" progressive lenses produced with Freeform technology over traditional progressive lenses is more effective.

From the manufacturer's own website. Source