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The first affordable prescription sunglasses online, made from flat panes of smoky quartz called Ai Tai, meaning "dark clouds," which offered no corrective powers but did protect the eyes from glare, were used in China in the 12th century or possibly earlier.

If you've found a pair of sunglasses that you love and you're wondering if they can be fitted with prescription lenses, the answer is yes! As long as the shape of the lens doesn't distort your vision and it has a sturdy frame, almost any pair of prescription sunglasses online can be equipped with prescription...

Advantages of Polarized Lenses of clip on sunglasses You're spending time outdoors during the day. You're fishing or boating. You're playing outdoor sports and don't want to be distracted by glare. You're in the snow (but not skiing or snowboarding) You're driving during the day. You're sensitive to light.

Polarized lenses of affordable prescription sunglasses online have a special chemical applied to them to filter light. The chemical's molecules are lined up specifically to block some of the light from passing through the lens. Think of it like a miniblind hanging in front of a window. Only light that passes through the blind's openings can...