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Flat Top Bifocal
Size70/28mm
Base4.00/6.00
Power -2.00 TO +3.00
Add +1.00 TO +3.00
Round Top Bifocal
Size70/28mm 70/24mm
Base4.00/6.00
Power -2.00 TO +3.00
Add +1.00 TO +3.00
Invisible Bifocal
Size70/28mm 70/24mm
Base4.00/6.00
Power -2.00 TO +3.00
Add +1.00 TO +3.00
Front curve(convex): 6.00+/-0.03
Center thickness: 2.0mm+/-0.3mm
Diameter tolerance: 70mm+/-0.3mm
|
| SPH |
ADD |
| 1.00 |
1.25 |
1.50 |
1.75 |
2.00 |
2.25 |
2.50 |
|
3.00 |
| |
|
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|
|
|
|
|
|
| +0.25 |
|
|
|
|
|
|
|
|
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| +0.50 |
|
|
|
|
|
|
|
|
|
| +0.75 |
|
|
|
|
|
|
|
|
|
| +1.00 |
|
|
|
|
|
|
|
|
|
| +1.25 |
|
|
|
|
|
|
|
|
|
| +1.50 |
|
Round
Bifocal,Invisble Bifocal,Flat Bifocal |
|
|
| +1.75 |
|
|
|
| +2.00 |
|
|
|
|
|
|
|
|
|
| +2.25 |
|
|
|
|
|
|
|
|
|
| +2.50 |
|
|
|
|
|
|
|
|
|
| +2.75 |
|
|
|
|
|
|
|
|
|
| +3.00 |
|
|
|
|
|
|
|
|
|
| -0.25 |
|
|
|
|
|
|
|
|
|
| -0.50 |
|
|
|
|
|
|
|
|
|
| -0.75 |
|
|
|
|
|
|
|
|
|
| -1.00 |
|
|
|
|
|
|
|
|
|
| -1.25 |
|
|
|
|
|
|
|
|
|
| -1.50 |
|
|
|
|
|
|
|
|
|
| -1.75 |
|
|
|
|
|
|
|
|
|
| -2.00 |
|
|
|
Round Bifocal,Invisble Bifocal |
|
|
|
| -2.25 |
|
|
|
|
|
|
| -2.50 |
|
|
|
|
|
|
|
|
|
| -2.75 |
|
|
|
|
|
|
|
|
|
| -3.0>0 |
|
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