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Dec 12, 2019
Bifocal Safety Glasses Polarized Protection to Wear for Work and Outdoor Sports
Multifocal eyeglass lenses, also referred to as "bifocal safety glasses", "readers", and “magnifiers”, contain two or more lens powers to help you see objects at all distances. Many people begin wearing multifocal lenses as they age when find that they can no longer naturally change the focus of their eyes to see at different distances, a condition known as presbyopia.
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