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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. Discount card - Wikipedia

    en.wikipedia.org/wiki/Discount_card

    Cards may be issued as part of a loyalty program, offering discounts to existing customers to ensure their continuing custom; they may be offered free of charge, offering a modest discount with the intention of persuading purchasers to patronise participating shops; or they may be sold to members, offering larger discounts—for example, the tastecard offers 50% discounts at many restaurants ...

  4. Alcon - Wikipedia

    en.wikipedia.org/wiki/Alcon

    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]

  5. Contact lens - Wikipedia

    en.wikipedia.org/wiki/Contact_lens

    Contact lenses are ocular prosthetic devices used by over 150 million people worldwide, [1] and they can be worn to correct vision or for cosmetic or therapeutic reasons. [2] In 2010, the worldwide market for contact lenses was estimated at $6.1 billion, while the US soft lens market was estimated at $2.1 billion. [3]

  6. 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

  7. Multifocal intraocular lens - Wikipedia

    en.wikipedia.org/wiki/Multifocal_intraocular_lens

    People who have a multifocal intraocular lens after their cataract is removed may be less likely to need additional glasses compared with people who have standard monofocal lenses. [2] People receiving multifocal lenses may experience more visual problems, such as glare or haloes (rings around lights), than with monofocal lenses. [2]

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