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  2. 10 Most Expensive Sunglasses in the World and What They ... - AOL

    www.aol.com/10-most-expensive-sunglasses-world...

    1. Chopard De Rigo Vision — $408,000. The no. 1 most expensive sunglasses in the world are the Chopard de Rigo Vision. Made by Chopard, a Swiss watchmaker and jeweler, this eyewear boasts 60 ...

  3. Fresnel lens - Wikipedia

    en.wikipedia.org/wiki/Fresnel_lens

    The Fresnel lens reduces the amount of material required compared to a conventional lens by dividing the lens into a set of concentric annular sections. An ideal Fresnel lens would have an infinite number of sections. In each section, the overall thickness is decreased compared to an equivalent simple lens.

  4. Eyeglass prescription - Wikipedia

    en.wikipedia.org/wiki/Eyeglass_prescription

    Eyeglass prescription. An eyeglass prescription is an order written by an eyewear prescriber, such as an optometrist, that specifies the value of all parameters the prescriber has deemed necessary to construct and/or dispense corrective lenses appropriate for a patient. If an eye examination indicates that corrective lenses are appropriate, the ...

  5. Sunglasses - Wikipedia

    en.wikipedia.org/wiki/Sunglasses

    Sunglasses or sun glasses (informally called shades or sunnies; more names below) are a form of protective eyewear designed primarily to prevent bright sunlight and high-energy visible light from damaging or discomforting the eyes. They can sometimes also function as a visual aid, as variously termed spectacles or glasses exist, featuring lenses that are colored, polarized or darkened. In the ...

  6. Stop splurging on expensive sunglasses — buy these instead

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    Affordable sunnies are the way to go, summer or not. The post Stop splurging on expensive sunglasses — buy these instead appeared first on In The Know.

  7. 10 Most Expensive Sunglasses in the World and What They Cost

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    Here are the 10 most expensive sunglasses in the world and what they cost. Sunglasses are not only practical and healthy for your eyes, they're also a fashion statement.