17mm Corridor Progressive Lens Design
A2 ProVision is the ultimate all-purpose progressive lens design for any base or addition. Especially designed for quick adjustment, A2 ProVision enables smooth transition from far to near vision, as well as clear vision at medium range.
A2 ProVision offers an all-aspheric, soft lens design with an exceptionally wide distortion-free area for every vision zone and reduced vertical prismatic levels in the entire lens area. The design is best suitable for large frames.
Power Map Cylinder Map
Technical Data
| Fitting Cross (above of MRP) |
2.0mm |
| Distance Circle (above of MRP) |
8.0mm |
| Near Area Circle |
17.0mm + 8° down to center and side |
| Corridor Width |
7.0mm (1.0 diopter scale |
| Addition Area Width |
18.00mm (1.0 diopter scale) |
| Maximum Nasal Astigmatism |
No more than addition |
* Measured on base 4.00 addition 2.00
Prescription Range
| Mold Nominal Base Curve |
Mold Radius (RCX) |
| 2.50 |
193.90 |
| 4.50 |
125.95 |
| 6.50 |
84.60 |
| 8.00 |
68.75 |
Mold Availability
| Bases |
2.50, 4.50, 6.50, 8.00 |
| Addition Powers |
1.00 to 3.50 in 0.25D steps |
| Refractive Indexes |
1.498, 1.56, 1.60, 1.67, 1.586 (PC) |
