Folding Glasses Portable Progressive Reading Glasses Multifocal Mens Anti-Blue Ray Presbyopic Eyeglasses with Leather Case

 

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Folding GlassesPortableProgressiveReading GlassesMultifocal Anti-Blue Ray Presbyopic Eyeglasses with Case

What is progressive multifocal lenses?

Progressive multifocal lens means that the diopter from the bottom(see near) to the top(see far) of the lens is gradually increased, and the diopter at the top(see far) of the lens is 0.