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  2. 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]

  3. Intraocular lens power calculation - Wikipedia

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

    Through normal eyes an average velocity of 1555 m/s is accepted for calculation. Modern instruments use separate sound velocities for the different eye components to obtain the total axial length. The measured transit time is converted to a distance using the formula d=t/v Where d is the distance, t is the time and v is the velocity. [1]

  4. Intraocular lens - Wikipedia

    en.wikipedia.org/wiki/Intraocular_lens

    Multifocal IOLs attempt to provide simultaneous viewing of distance vision and near vision. Trifocal IOLs can provide intermediate vision in addition. [ 5 ] Many multifocal IOL designs attempt to achieve this simultaneous viewing focus using a concentric ring design, which alternates distance and near focal points.

  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. List of newspapers in India by circulation - Wikipedia

    en.wikipedia.org/wiki/List_of_newspapers_in...

    According to the Registrar of Newspapers for India, there are 1,10,851 registered publications in the Republic of India as of 31 March 2016. [4] This is a list of the newspapers in India by readership according to the Indian Readership Survey (IRS) Q4 2019.

  7. 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

  8. Progressive lens - Wikipedia

    en.wikipedia.org/wiki/Progressive_lens

    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.

  9. Dailies - Wikipedia

    en.wikipedia.org/wiki/Dailies

    Dailies delivered to the editing department will usually have timecode and keycode numbers overlaid on the image. The numbers are used to later assemble the original high-quality film and audio to conform to the edit. Depending on how the dailies are produced, these numbers may only be on the editor's copy of the dailies or all copies of the ...

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