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Technical Data
1.56 S/F SHORT CORRIDOR PROGRESSIVE BLANKS | ||||||||
MARTERIAL REFRACTIVE INDEX=1.56 TOOLING INDEX=1.530 | ||||||||
Diameter(mm) | Nominal | Front | T.C | Back | BACK | CT/ET | Frong sag | RX Range |
ɸ75 | 300B | 337.35 | 1.57 | 87.17 | 6.08 | 7.0/13.0 | 0.93 | -6.75Dto-8.00D |
ɸ75 | 400B | 149.54 | 3.54 | 104.6 | 5.07 | 7.0/9.0 | 2.10 | +2.00Dto-4.25 |
ɸ75 | 500B | 90.95 | 5.83 | 104.6 | 5.07 | 10.0/9.0 | 3.50 | 0.00Dto+3.50 |
ɸ75 | 600B | 67.16 | 7.89 | 87.17 | 6.08 | 9.5/6.0 | 4.83 | -4.25Dto+6.00 |
Product Features
Progressive lenses, sometimes called "no-line bifocals," give you a more youthful appearance by eliminating the visible lines found in bifocal (and trifocal) lenses. But beyond being just a multifocal lens with no visible lines, progressive lenses offer other advantages as well: primarily, the ability to see at all distances, including at arm's length for computer use and up close for reading.
---Progressive lenses are line-free multifocals that have a seamless progression of added magnifying power for intermediate and near vision.
---With progressive lenses, you can look up to see clearly across the room and in the distance. You also can look ahead to view your computer in the intermediate zone and drop your gaze downward to read and do fine work comfortably through the near zone of the lenses.
---It's easy to adapt to today's modern progressive lenses. |
Don’t let multi-focal vision cramp your style. You no longer have to be caught peering over bifocals, or switching out two pairs of glasses. With progressive lenses, you can see your entire world in a crisp, clear, seamless way. One pair of eyeglasses can do it all.
Compared with bifocal lens:
Comfortable Vision At More Distances Than Bifocals
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