65m/m or 71 m/m Rd. 25m/m Bi-focals

Semi-Finished

Material: CR-39*

Base Curves: Plano, 2.00, 4.25, 6.25, 8.25, 10.25, 12.00 (Plano and 12.00 not available in 71m/m)

Additions: .50-20.00 Available in .25 Steps (ex. 1.25, 1.50, 1.75, 2.00)

(Higher Adds may be available)

Also available in 65m/m Extra Thick 15m/m Edge and 65m/m Extra Thick 22m/m Edge

Material CR-39* Plastic Specific Gravity 1:32

Index of Refraction: 1.498 Round 25m/m Bi-focal

Abbe Value: 58 65m/m & 71 m/m Blanks

Lens Actual Nominal Actual Back Sag Seg Seg

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

Rd-25 65m/m Plano 0.00 2.25 0.00 12.3 14.3 0.0 4.5

Rd-25 65m/m 2.00 2.00 2.25 1.191 10.8 11.5 0.0 4.5

Rd-25 65m/m 4.25 4.25 6.25 2.573 9.4 11.5 0.0 4.5

Rd-25 65m/m 6.25 6.25 6.25 3.864 8.0 11.5 0.0 4.5

Rd-25 65m/m 8.25 8.25 6.25 5.240 10.5 11.5 0.0 4.5

Rd-25 65m/m 10.25 10.25 6.25 6.742 12.5 11.5 0.0 4.5

Rd-25 65m/m 12.00 12.00 6.25 8.207 15.4 11.5 0.0 4.5

Rd-25 71m/m 2.00 2.00 2.25 1.191 11.2 11.5 0.0 4.5

Rd-25 71m/m 4.25 4.25 6.25 2.573 9.0 11.5 0.0 4.5

Rd-25 71m/m 6.25 6.25 6.25 3.864 8.2 11.5 0.0 4.5

Rd-25 71m/m 8.25 8.25 6.25 5.240 10.8 11.5 0.0 4.5

Rd–25 71m/m 10.25 10.25 6.631 13.2 11.5 0.0 4.5