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  2. List of soft contact lens materials - Wikipedia

    en.wikipedia.org/wiki/List_of_soft_contact_lens...

    Proclear 1-Day, Proclear EP, Proclear 1 day Multifocal, Proclear Multifocal Toric, Biomedics XC, Aveo Omafilcon B: 62: 21.3–52.3: Proclear Sphere, Proclear toric, Proclear toric XR, Proclear multifocal, Proclear multifocal XR, Proclear multifocal toric Vasurfilcon A: 74: 39.1: Precision UV Hioxifilcon A: 59: 28

  3. Progressive lens - Wikipedia

    en.wikipedia.org/wiki/Progressive_lens

    1 History. 2 Advantages and use. ... the higher the addition. They are also known as multifocal lenses, progressive ... manufacturers claim acceptance rates of 90% ...

  4. Multifocal diffractive lens - Wikipedia

    en.wikipedia.org/wiki/Multifocal_diffractive_lens

    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

  5. List of newspapers by circulation - Wikipedia

    en.wikipedia.org/wiki/List_of_newspapers_by...

    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 ]

  6. Alcon - Wikipedia

    en.wikipedia.org/wiki/Alcon

    Alcon offices in Johns Creek, Georgia. Alcon Inc. (German: Alcon AG) is a Swiss-American pharmaceutical and medical device company specializing in eye care products. It has a paper headquarters in Geneva, Switzerland but its operational headquarters are in Fort Worth, Texas, United States, where it employs about 4,500 people.

  7. Intraocular lens power calculation - Wikipedia

    en.wikipedia.org/wiki/Intraocular_lens_power...

    The aim of an accurate intraocular lens power calculation is to provide an intraocular lens (IOL) that fits the specific needs and desires of the individual patient. The development of better instrumentation for measuring the eye's axial length (AL) and the use of more precise mathematical formulas to perform the appropriate calculations have significantly improved the accuracy with which the ...

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