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impact 1.61 bi-focal

1.61 index lenses comply with the FDA regulations regarding impact resistance (i.e. a 5/8" steel ball dropped from 50 inches).

However, for certain sports activities or for use by youth/children, it is best practice to recommend lens materials which have enhanced shatter resistance.

The available lens materials are polycarbonate, Trivex and Xirm.

Unfortunately, for bifocals we do not carry materials with enhanced shatter resistance. You could try switching to a progressive lens as these are available in all materials.

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