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  2. List of soft contact lens materials - Wikipedia

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

    Biofinity, Biofinity toric, Biofinity XR, Biofinity XR toric, Biofinity Energys, Biofinity multifocal Enfilcon A: 1: 46: 100: 0.6: 0.06: Avaira, Avaira Toric Balafilcon A: 3: 36: 91-130: 1.1: 0.09: PureVision, PureVision Toric, PureVision Multi-Focal, PureVision2, PureVision2 for Astigmatism, PureVision2 Multi-Focal for Presbyopia Delefilcon A ...

  3. Toric lens - Wikipedia

    en.wikipedia.org/wiki/Toric_lens

    Toric lens surface as "cap" (top-right) from a torus (here with R = 1.2 r ). A toric lens is a lens with different optical power and focal length in two orientations perpendicular to each other. One of the lens surfaces is shaped like a "cap" from a torus (see figure at right), and the other one is usually spherical.

  4. Acuvue - Wikipedia

    en.wikipedia.org/wiki/Acuvue

    Acuvue Oasys – (senofilcon A) silicone hydrogel material (available for presbyopia in US and astigmatism in most other markets). Introduced in 2005. Monthly Disposable: Acuvue Vita – (senofilcon C) Methyl ether cellulose. Introduced in 2016. Surevue was also produced by Vistakon but not under the Acuvue brand.

  5. The 9 best rechargeable hearing aids, according to hearing ...

    www.aol.com/lifestyle/best-rechargeable-hearing...

    Quick Overview. Starkey Genesis AI RIC. Best rechargeable prescription hearing aid. $2,000 – $6000 at Starkey. Jabra Enhance Select 300. The best OTC rechargeable hearing aid. $1,595 – $1,795 ...

  6. Contact lens - Wikipedia

    en.wikipedia.org/wiki/Contact_lens

    Second-generation silicone hydrogels, such as galyfilcon A (Acuvue Advance, Vistakon) and senofilcon A (Acuvue Oasys, Vistakon), use the Tanaka monomer. Vistakon improved the Tanaka monomer even further and added other molecules, which serve as an internal wetting agent. Comfilcon A (Biofinity, CooperVision) was the first third-generation ...

  7. CooperVision - Wikipedia

    en.wikipedia.org/wiki/CooperVision

    The Cooper Companies, Inc. Website. CooperVision. CooperVision in Ontario. CooperVision, Inc. is a business unit of The Cooper Companies, Inc.. It is primarily a soft contact lens manufacturer. The company was founded in 1980, and it is headquartered in Pleasanton, California. Its products are sold in over 100 countries.