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Bifocal 1.56 Flat Top G56 (index 1.56)
BIFOCAL FLAT TOP 1.56
REFRACTIVE INDEX
1.56
ABBE VALUE
38
SEMI-FINISHED BIFOCAL FLAT TOP 1.56
BASE
SPECIFIC GRAVITY
1.27
ADD POWER +0.75D to +4.00 in 0.25D steps
0.50 2.00 4.00 6.00 8.00 10.00
70/28mm
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