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  2. American Optical Company - Wikipedia

    en.wikipedia.org/wiki/American_Optical_Company

    Learn about the history and products of American Optical Company, a luxury eyewear and sunglass maker in the US. Find out how it supplied glasses to troops, astronauts, and presidents, and created the iconic aviator style.

  3. Visionworks - Wikipedia

    en.wikipedia.org/wiki/Visionworks

    Visionworks is a private company that operates or manages 711 optical stores in 40 states and DC. It sells frames, lenses, sunglasses and accessories, and offers contact lens services and online sales.

  4. Eyeglass prescription - Wikipedia

    en.wikipedia.org/wiki/Eyeglass_prescription

    Learn how to interpret and write an eyeglass prescription that includes sphere, cylinder and axis components. Sphere and cylinder specify the power of the lenses, and axis defines the orientation of the cylinder relative to horizontal and vertical.

  5. Silhouette (eyewear) - Wikipedia

    en.wikipedia.org/wiki/Silhouette_(eyewear)

    Silhouette International Schmied AG is a family-owned company that produces and distributes frames and lenses for eyewear. It has offices and subsidiaries in several countries and produces eyewear under three brands: Silhouette, NEUBAU EYEWEAR and evil eye.

  6. LensCrafters - Wikipedia

    en.wikipedia.org/wiki/LensCrafters

    LensCrafters is an international retailer of prescription eyewear and sunglasses, founded in 1983 by E. Dean Butler. It is owned by EssilorLuxottica, the largest eyewear company in the world, and operates 1,158 stores in North America, China, Hong Kong and India.

  7. Sigma Corporation - Wikipedia

    en.wikipedia.org/wiki/Sigma_Corporation

    Sigma Corporation is a private company that produces cameras, lenses, flashes and other photographic accessories. It is known for its high-quality lenses that are compatible with various camera systems, and its Foveon sensors that use different layers to capture color and detail.

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