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  2. Vision Express - Wikipedia

    en.wikipedia.org/wiki/Vision_Express

    Grand Vision acquired Vision Express in 1997. The French parent company Grand Vision has clinics under various brands across Europe, and the rest of the world. Under franchise agreement there is a strong Vision Express brand present also in Latvian and Lithuanian markets.

  3. Phoropter - Wikipedia

    en.wikipedia.org/wiki/Phoropter

    The lenses were increased to 3 ⁄ 4 inch diameter, the permanent size, and the unit was much more massive, with a weight of 7 lb. 9 oz., and with a range of +16.87 to -19.12 sphere and 6.00 cylinder, with auxiliary lenses to increase these to +18.87/-21.12 sphere and 8.00 cylinder. All these models resembled the original DeZeng model in design ...

  4. Bionic contact lens - Wikipedia

    en.wikipedia.org/wiki/Bionic_contact_lens

    Early embodiment of contact lens display, Canadian patent application 2280022, 1999 July 28th. A bionic contact lens is a proposed device that could provide a virtual display that could have a variety of uses from assisting the visually impaired to video gaming, as claimed by the manufacturers and developers. [1]

  5. History of the telescope - Wikipedia

    en.wikipedia.org/wiki/History_of_the_telescope

    Objects resembling lenses date back 4000 years although it is unknown if they were used for their optical properties or just as decoration. [6] Greek accounts of the optical properties of water-filled spheres (5th century BC) were followed by many centuries of writings on optics, including Ptolemy (2nd century) in his Optics, who wrote about the properties of light including reflection ...

  6. Varilux - Wikipedia

    en.wikipedia.org/wiki/Varilux

    The new surfacing techniques developed by Essilor made the adaptation much quicker than on previous progressive lenses and provided comfortable vision in all postures. Finally, in the 21st century, Essilor launched Varilux Panamic (2002), [ 15 ] Varilux Ellipse (2004), Varilux Physio (2006), [ 16 ] Varilux Ipseo (2008).

  7. Panavision - Wikipedia

    en.wikipedia.org/wiki/Panavision

    Panavision is an American motion picture equipment company founded in 1954 specializing in cameras and lenses, based in Woodland Hills, California.Formed by Robert Gottschalk as a small partnership to create anamorphic projection lenses during the widescreen boom in the 1950s, Panavision expanded its product lines to meet the demands of modern filmmakers.

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