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    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