65m/m Minus Front Base Rd. 28m/m (Extra Thick)

Semi-Finished

Material: CR-39*

Edge Thickness: Approx. 21 m/m

Base Curve: -3.00

Additions:

1.00, 1.50, 2.00, 2.50, 3.00, 3.50, 4.00, 4.50, 5.00

5.50, 6.00, 6.50, 7.00, 7.50, 8.00, 8.50, 9.00, 9.50, 10.00

Base Curve: -6.25 & -8.25

Additions:

1.00, 1.50, 2.00, 2.50, 3.00, 3.50, 4.00, 4.50, 5.00

5.50, 6.00, 6.50, 7.00, 7.50, 8.00, 8.50, 9.00, 9.50, 10.00

(other additions please call for quotation)

Material: CR-39* Plastic Specific Gravity: 1.32

Index of Refraction: 1.498 Minus Front Base

Abbe Value: 58 65m/m Single Vision

Round 22m/m Bi-focal
Round 25m/m Bi-focal
Round 28m/m Bi-focal

MINUS FRONT BASE

Single Vision, Rd. 22, Rd. 25, Rd. 28m/m
EXTRA THICK

Lens Actual Nominal Actual Back Sag Seg Seg

Style Size Curve Curve Curve 50m/m C.T. E.T. Inset Drop

S.V. 65m/m -2.75 -2.87 2.25 -1.722 17.2 22.0 S.V. S.V.

S.V. 65m/m -4.50 -4.75 2.25 -2.890 15.6 22.0 S.V. S.V.

S.V. 65m/m -6.25 -6.50 2.25 -3.829 13.4 22.0 S.V. S.V.

S.V. 65m/m -8.25 -8.62 2.25 -5.511 11.6 22.0 S.V. S.V.

S.V. 65m/m -10.25 -10.62 2.25 -7.042 11.8 24.0 S.V. S.V.

Bif. 65m/m -3.00 -3.12 2.25 -1.831 17.0 22.0 0.0 4.0

Bif. 65m/m -6.25 -6.50 2.25 -3.829 13.4 22.0 0.0 4.0

Bif. 65m/m -8.25 -8.62 2.25 -5.511 12.0 22.0 0.0 4.0