"Dual Eyewear sports sunglasses integrate bifocal-like lenses, putting a
small magnification zone in the lower, inner corner, " says
Giz Mag. "Look through it and
get the magnifying power you need to see those numbers quickly and
surely. The greater lens is just a regular polycarbonate sunglass lens.
Several reviews that we've read indicate that magnification works
effectively without hindering regular vision.
Read more.
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