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  2. Lenstore - Wikipedia

    en.wikipedia.org/wiki/Lenstore

    Lenstore is an online optical retailer, specialising in contact lenses, solutions and other accessories and eye care products. History. Lenstore was founded on 3 January 2008 by Oxford graduate, Mitesh Patel. The website went live on 11 June 2008 and by 2012 the company had entered the Sunday Times Fast Track 100 in 10th place.

  3. Shamir Optical Industry - Wikipedia

    en.wikipedia.org/wiki/Shamir_Optical_Industry

    Shamir Optical Industry Ltd. is an international company headquartered in Kibbutz Shamir, Israel that develops and manufactures optical lenses for eyeglasses . [2] [failed verification] In 2005, the company issued dual listings, on the Tel Aviv Stock Exchange and NASDAQ, becoming the first company from the kibbutz industry to be listed on NASDAQ.

  4. Effects of long-term contact lens wear on the cornea - Wikipedia

    en.wikipedia.org/wiki/Effects_of_long-term...

    Long-term contact lens use can lead to alterations in corneal thickness, stromal thickness, curvature, corneal sensitivity, cell density, and epithelial oxygen uptake, etc. Other changes may include the formation of epithelial vacuoles and microcysts (containing cellular debris) as well as the emergence of polymegethism in the corneal endothelium.

  5. Hoya Corporation - Wikipedia

    en.wikipedia.org/wiki/Hoya_Corporation

    Hoya Corporation. Hoya Corporation (Hoya株式会社, Hōya Kabushiki-gaisha) is a Japanese company manufacturing optical products such as photomasks, photomask blanks and hard disk drive platters, contact lenses and eyeglass lenses for the health-care market, [4] medical photonics, [5] lasers, photographic filters, medical flexible endoscopy ...

  6. Rigid gas permeable lens - Wikipedia

    en.wikipedia.org/wiki/Rigid_gas_permeable_lens

    Rigid gas permeable lens. A rigid gas-permeable lens, also known as an RGP lens, GP lens, or colloquially, a hard contact lens, is a rigid contact lens made of oxygen -permeable polymers. Initially developed in the late 1970s, and through the 1980s and 1990s, they were an improvement over prior 'hard' lenses that restricted oxygen transmission ...

  7. Anti-reflective coating - Wikipedia

    en.wikipedia.org/wiki/Anti-reflective_coating

    Anti-reflective coatings are often used in camera lenses, giving lens elements distinctive colors. Such colors indicate the wavelength of visible light least affected by the antireflective properties of the coating. A variety of colors can be produced whose precise hue depends entirely on the thickness of the coating.

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