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  2. Prism correction - Wikipedia

    en.wikipedia.org/wiki/Prism_correction

    Prism dioptres. Prism correction is commonly specified in prism dioptres, a unit of angular measurement that is loosely related to the dioptre. Prism dioptres are represented by the Greek symbol delta (Δ) in superscript. A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. [2]

  3. Corrective lens - Wikipedia

    en.wikipedia.org/wiki/Corrective_lens

    Corrective lens. A corrective lens is a transmissive optical device that is worn on the eye to improve visual perception. The most common use is to treat refractive errors: myopia, hypermetropia, astigmatism, and presbyopia. Glasses or "spectacles" are worn on the face a short distance in front of the eye.

  4. Zenni Optical - Wikipedia

    en.wikipedia.org/wiki/Zenni_Optical

    Zenni Optical mail order. Zenni Optical was founded in 2003 by Tibor Laczay and Julia Zhen. [1] [2] Before being renamed to Zenni Optical when it began offering $7 and $8 glasses, the company was named 19dollareyeglasses.com. [3] [4] [5] Around 2014, co-founder Zhen acquired the building occupied by the Marin Independent Journal to house Zenni. [6]

  5. Category:Eyewear brands of the United States - Wikipedia

    en.wikipedia.org/wiki/Category:Eyewear_brands_of...

    C. Calvin Klein (fashion house) Charming Charlie. Coach New York. Coco & Breezy. Cole Haan. Columbia Sportswear. Costa Del Mar.

  6. Essilor - Wikipedia

    en.wikipedia.org/wiki/Essilor

    In 2007 Essilor launched the Essilor Vision Foundation in the USA. This organization was created to run tests in schools to detect vision problems. Essilor Vision Foundation provides the followup care and glasses to children in need. [10] In 2008 Essilor acquired the Swiss company Satisloh, a manufacturer of prescription laboratory equipment. [11]

  7. VSP Vision Care - Wikipedia

    en.wikipedia.org/wiki/VSP_Vision_Care

    VSP Vision Care (VSP) is a vision care health insurance company operating in Australia, Canada, Ireland, the United States, and the United Kingdom.It is a doctor-governed company divided into five businesses: “eye care insurance, high-quality eyewear, lens and lens enhancements, ophthalmic technology, and connected experiences to strengthen the relationship between patients and their eye ...

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