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CR39

Crown Glass

Transitions

Transitions X-Tra Active

1.52 Colormatic

1.54 Spectralite

1.55 Easylite

Transitions III

1.56 Thindex

1.57

Polycarbonate

1.60

1.60 Finalite/Luscious

1.66

1.67

Glass 1.60

Glass 1.70

Glass 1.80

Glass 1.90

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