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  2. Circle contact lens - Wikipedia

    en.wikipedia.org/wiki/Circle_contact_lens

    Circle lenses manufactured in Korea are under the approval and guidelines of the Ministry of Food and Drug Safety. Acuvue, the contact lens brand from Johnson & Johnson Vision, has a line of prescription daily disposable color contact lenses marketed under the name "1-Day Acuvue Define" available in the United States as well as other countries ...

  3. Hoya Corporation - Wikipedia

    en.wikipedia.org/wiki/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 equipment, and software.

  4. Pentax - Wikipedia

    en.wikipedia.org/wiki/PENTAX_Corporation

    Pentax, founded in 1919 as a town workshop specializing in polishing eyeglass lenses, developed Japan's first single-lens reflex camera, the Asahiflex, in 1952. By 2006, Pentax's domestic market share in digital cameras had declined to 4%. In 2007, Pentax was acquired by Hoya and subsequently merged with the company the following year.

  5. Zuiko - Wikipedia

    en.wikipedia.org/wiki/Zuiko

    Zuiko (Japanese: ズイコー or 瑞光) is a brand of optical lenses [1] made by Olympus Corporation that was used up to and into the Four Thirds system era. The name Zuiko (瑞光) means 'Holy Light', using a character from the Mizuho Optic Research Laboratory (瑞穂光学研究所), where the lens was developed, and a character from Takachiho Corporation (高千穂製作所), which would ...

  6. Contact lens - Wikipedia

    en.wikipedia.org/wiki/Contact_lens

    Artist's impression of Leonardo's method for neutralizing the refractive power of the cornea. Leonardo da Vinci is frequently credited with introducing the idea of contact lenses in his 1508 Codex of the eye, Manual D, [9] wherein he described a method of directly altering corneal power by either submerging the head in a bowl of water or wearing a water-filled glass hemisphere over the eye.

  7. Sigma Corporation - Wikipedia

    en.wikipedia.org/wiki/Sigma_Corporation

    Sigma Corporation (株式会社シグマ, Kabushiki-gaisha Shiguma) is a Japanese company, manufacturing cameras, lenses, flashes and other photographic accessories. All Sigma products are produced in the company's own Aizu factory in Bandai, Fukushima, Japan. Although Sigma produces several camera models, the company is best known for ...

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