Prism: Flipper - Base-In and Base-Out

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Individual hand-held prism flippers. The orientation of these flippers is in base-in and base-out. Lens Types are: 1 Diopter (1^+1^) = 2^ total 2 Diopter (2^+2^) = 4^ total 3 Diopt er (3^+3^) = 6^ total 4 Diopter (4^+4^) = 8^ total 6 Diopter (6^+6^) = 12^ total 8 Diopter (8^+8^) = 16^ total Show more