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CooperVision develops, manufactures, and markets a range of contact lenses to a worldwide market. CooperVision produces both spherical contact lenses and specialty lens products in varying wearing and replacement schedules (i.e., how long a lens can be worn prior to removal and before it must be discarded).
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Multifocal diffractive lens, a diffractive optical element used with lasers Topics referred to by the same term This disambiguation page lists articles associated with the title Multifocal lens .
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.
Progressive lenses are corrective lenses used in eyeglasses to correct presbyopia and other disorders of accommodation. They are characterised by a gradient of increasing lens power , added to the wearer's correction for the other refractive errors .
The geometry of a toric lens focuses light differently in different meridians. A meridian, in this case, is a plane that is incident with the optical axis. For example, a toric lens, when rotated correctly, could focus an object to the image of a horizontal line at one focal distance while focusing a vertical line to a separate focal distance.
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