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This list below shows paid newspaper dailies by circulation worldwide. The data is compiled from WAN-IFRA's World Press Trends 2016 report. [ 2 ] [ 3 ] [ note 1 ]
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A multifocal diffractive lens is a diffractive optical element (DOE) that allows a single incident beam to be focused simultaneously at several positions along the propagation axis. [ 1 ] Example of multifocal peak intensity distribution along optical axis.(Courtesy of Holo/Or) Intensity distribution of multifocal lens 5 foci in Z-X plane
The length of the progressive power gradient on the lens surface depends on the design of the lens, with a final addition power between 0.75 and 3.50 dioptres. The addition value prescribed depends on the level of presbyopia of the patient. In general the older the patient, the higher the addition.
Multifocal IOLs can also be trifocal IOLs or extended depth of focus (EDOF) lenses. As of 2021, nearly 28 million cataract procedures take place annually worldwide. That is about 75,000 procedures per day globally. [ 3 ]
On July 8, 2010, Alcon's independent director committee (IDC) had set up a $50 million litigation trust to ensure company's minority shareholders get the best deal from bidder Novartis AG. [15] On April 9, 2019, Alcon completed a 100% spin-off from Novartis. [4] [16] [17] The new standalone company is worth up to 28 billion Swiss francs. [18]
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