Structural Design
Decentration of 2.5 mm allows glazing of lenses into large frames.
Full addition 18 mm below the fitting cross and downward of lens power enables
easy optician fitting for broad reading zone.
Cosmetic Prism in order to reduce overall thickness, prism thinning is desirable.
| Prescription Range | ||
|---|---|---|
| RX Range | Suggested Base Curve | Radius |
| -9.00 to -4.00 | 2.00 | 257.282 |
| -3.75 to -1.50 | 4.00 | 130.542 |
| -1.25 to +2.50 | 5.50 | 95.495 |
| +2.75 to +6.00 | 7.50 | 72.306 |
Lens Description
| CR-39 Base Curves: | 2.00, 4.00, 5.50, 7.50 |
| Index 1.57 Clear Base Curves: | 1.50, 3.00, 5.25, 7.00 |
| Photochromic Index 1.56 base curves: | 1.50, 3.00, 5.25, 7.00 |
| Add Powers: | 0.75D to 3.50D in 0.25D steps |
| Blank Size: | 75/80 mm (fully usable) |
Blank Data Tables |
| The lens has a unique design which offers
elegance and optimal vision. The design applies advanced mathematics to assure easy adaptation of
focus in a widened, distortion-less field. This achieves: * A near vision zone of broad distortion-free perspective * Comfortable intermedia zones in progressive lenses due to widened corridor * Maximum visual comfort in the distance zone due to less aberration in the peripheral areas Optimal performance of the design guarantees visual comfort by creating a smooth progression of power through the lens. The lens gives new presbyopes a wide intermediate corridor and clear distance so they can adapt easily. The lens gives current bifocal wearers what they expect - a large, accessible near zone and a wide, clear distance. |
| Technical Facts | |
| Maximum cyl. | 2.6 |
| Width of Far Vision 0.5d |
17.5 |
| Width of Corridor 1d |
6.7 |
| Width of Near Zone -14mm, 1d |
13.5 |
| Width of Near Zone -18mm, 1d |
16.3 |
| Fitting Cross | 4.0 |
| Start of Progressive in mm above MRP |
5.0 |
| End of Progressive | 14.0 |
| Vertical Hardness nasal |
0.23 |
| Vertical Hardness Temporal |
0.19 |
| Horizontal Hardness nasal |
0.22 |
| Horizontal Hardness Temporal |
0.20 |