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Lens Material Guide
Prescription Lens Material Guide

Lens Material Index Recommended Rx Range
Plastic CR-39 1.49 Up to + or -2.00
Trivex 1.53 Up to + or -4.00
Polycarbonate 1.58 Up to + or -4.00
High Index 1.60 1.60 Up to + or -6.00
High Index 1.67 1.67 Up to + or -8.00
High Index 1.70 1.70 Up to + or -10.00
High Index 1.74 1.74 Up to + or -12.00

Progressive - Seiko - Superior - Digital - High Index 1.67 - Transitions Signature

Progressive - Seiko - Superior - Digital FreeForm - High Index 1.67 - Transitions Signature

Have a question about your lens selection... Contact Us today.

Have a question about your lens selection... Contact Us today.