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Varilux is a brand name belonging to Essilor International, a producer of corrective lenses. The first version of the lens was invented by Bernard Maitenaz and released in 1959, and was the first modern [ clarification needed ] progressive lens to correct presbyopia .
Essilor International is a French multinational corporation specialized in the design, manufacture and sale of ophthalmic lenses, optical equipment and instruments. [ 1 ] [ 2 ] It is the world's largest manufacturer of ophthalmic lenses.
Pages in category "Essilor" ... Varilux; Vision Direct; Vision Source This page was last edited on 16 November 2024, at 13:32 (UTC). Text is available ...
The Carl Zeiss AG & Varilux lenses were the first PAL of modern design. Bernard Maitenaz, patented Varilux in 1953, and the product was introduced in 1959 by Société des Lunetiers (now Essilor). The first Varilux lenses' surface structure was however still close to a bifocal lens, with an upper, aberration-free half of the surface for far ...
Researchers are learning more about ancient central European society thanks to stones from thousands of years ago.. A team of international scientists analyzed markings made on more than 400 stone ...
Other terms often used for printed engravings are copper engraving, copper-plate engraving or line engraving. Steel engraving is the same technique, on steel or steel-faced plates, and was mostly used for banknotes, illustrations for books, magazines and reproductive prints, letterheads and similar uses from about 1790 to the early 20th century, when the technique became less popular, except ...
Pearle Vision is an American chain of eye care stores. It is one of the largest franchised optical retailers in North America. The company was acquired by Luxottica (which has since merged with Essilor to form EssilorLuxottica), [2] an Italian eyewear company, in 2004.
Engraving had been used by goldsmiths to decorate metalwork, including armor, musical instruments and religious objects since ancient times, and the niello technique, which involved rubbing an alloy into the lines to give a contrasting color, also goes back to late antiquity. Scholars and practitioners of printmaking have suggested that the ...
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