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Clear Plastic Trifocals
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Next - Select a trifocal segment size you're looking for.
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Eyeglass trifocal lenses are available with the reading segments in a variety of shapes and sizes.
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The most popular trifocal segment width is the Flat-Top 7x28 (also known as straight-top or D-segment), 28 millimeters wide.
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Recommended prescription range for CR-39 Plastic Lenses:
Sphere below + or - 1.00
Cylinder below + or - 1.00
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Select the bifocal size that best describes the type you require. |
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