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