Essilor International Société Anonyme designs, manufactures, and sells ophthalmic lenses and ophthalmic optical instruments in North America, Europe, Asia/Oceania/Africa, and Latin America. It operates through three segments: Lenses & Optical Instruments, Equipment, and Sunglasses & Readers. The Lenses and Optical Instruments segment offers Varilux range of progressive lenses; Crizal range of lenses with anti-reflective, anti-smudge, and anti-static lenses; Transitions and its photochromic lenses; Eyezen for users of computers, tablets, smartphones, and other connected devices; Xperio polarized sun lenses; and Nikon and Kodak lenses under licensing agreements. This segment also designs, develops, markets, and maintains a range of optical instruments, including lens edging and mounting instruments for opticians and prescription laboratories; and vision screening instruments for eye care professionals, schools, occupational medicine centers, military, and other institutions. This segment offers its products for correcting myopia, hyperopia, astigmatism, and presbyopia. The Equipment segment manufactures and markets equipment and consumables, such as surfacing machines and anti-reflective coating units for prescription laboratories, and integrated optical chains and lens manufacturers. The Sunglasses & Readers segment produces, distributes, and sells non-prescription reading glasses and sunglasses under the Foster Grant, Freedom Polarised, Gargoyles, Magnivision, Corinne McCormack, Monkey Monkey, Ryders Eyewear, SolarShield, and Suuna names, as well as licenses under the Dockers, French Connection, Hello Kitty, Ironman, Karen Millen, Levi's, Nine West, Reebok, and Disney names. The company has a network of 481 prescription laboratories and edging mounting facilities. Essilor International Société Anonyme was founded in 1849 and is headquartered in Charenton-le-Pont, France.