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  2. Intraocular lens - Wikipedia

    en.wikipedia.org/wiki/Intraocular_lens

    A phakic IOL. An intraocular lens (IOL) is a lens implanted in the eye usually as part of a treatment for cataracts or for correcting other vision problems such as short sightedness and long sightedness; a form of refractive surgery. If the natural lens is left in the eye, the IOL is known as phakic, otherwise it is a pseudophakic lens

  3. 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 ...

  4. Phakic intraocular lens - Wikipedia

    en.wikipedia.org/wiki/Phakic_intraocular_lens

    A phakic intraocular lens (PIOL) is an intraocular lens that is implanted surgically into the eye to correct refractive errors without removing the natural lens (also known as "phakos", hence the term). Intraocular lenses that are implanted into eyes after the eye's natural lens has been removed during cataract surgery are known as pseudophakic.

  5. Cataract surgery - Wikipedia

    en.wikipedia.org/wiki/Cataract_surgery

    Cataract surgery, also called lens replacement surgery, is the removal of the natural lens of the eye that has developed a cataract, an opaque or cloudy area. [1] The eye's natural lens is usually replaced with an artificial intraocular lens (IOL) implant.

  6. Phacoemulsification - Wikipedia

    en.wikipedia.org/wiki/Phacoemulsification

    The eye will be checked to ensure the IOL remains in place, and once it has fully stabilised, after about six weeks, vision tests will be used to check whether prescription lenses are needed. [37] [21] Where the focal length of the IOL is optimised for distance vision, reading glasses will generally be needed for near focus.

  7. Alcon (ALC) Faces Cost Pressure, Supply Chain Disruption - AOL

    www.aol.com/news/alcon-alc-faces-cost-pressure...

    Given the supply chain challenges, unfavorable foreign exchange impact and inflationary pressure, Alcon (ALC) reduces its core EPS and net sales expectations for 2022.

  8. Multifocal intraocular lens - Wikipedia

    en.wikipedia.org/wiki/Multifocal_intraocular_lens

    Intraocular lenses that correct presbyopia are divided into two main categories: [1] Multifocal IOLs: achieve near and distance vision by having two (bifocal) or three (trifocal) focal points simultaneously. The function of multifocal IOL depends on the pupil size for refractive types.

  9. Alcon - Wikipedia

    en.wikipedia.org/wiki/Alcon

    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.

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