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Bifocal 1.50 Flat Top G50 (index 1.50)
BIFOCAL FLAT TOP 1.50
REFRACTIVE INDEX
1.50
ABBE VALUE
58
SEMI-FINISHED FLAT TOP 1.50
BASE
70/28mm
0.50 2.00 4.00 5-00 6.00 7.00 8.00 10.00
BASE
65/28mm
12.00 14.00
SPECIFIC GRAVITY
1.32
ADD POWER +0.50D to +4.00D in 0.25D steps
FINISHED FLAT TOP 1.50
MINUS 70/28 mm
SPH
-0.25 to -3.00
ADD
+1.00 to +3.50
PLUS 70/28 mm
SPH
Plano to +4.00
ADD
+1.00 to +3.50
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