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  2. Corrective lens - Wikipedia

    en.wikipedia.org/wiki/Corrective_lens

    Corrective lens. A corrective lens is a transmissive optical device that is worn on the eye to improve visual perception. The most common use is to treat refractive errors: myopia, hypermetropia, astigmatism, and presbyopia. Glasses or "spectacles" are worn on the face a short distance in front of the eye.

  3. Abbe number - Wikipedia

    en.wikipedia.org/wiki/Abbe_number

    Abbe number. In optics and lens design, the Abbe number, also known as the V-number or constringence of a transparent material, is an approximate measure of the material's dispersion (change of refractive index versus wavelength), with high values of V indicating low dispersion. It is named after Ernst Abbe (1840–1905), the German physicist ...

  4. Eyeglass prescription - Wikipedia

    en.wikipedia.org/wiki/Eyeglass_prescription

    Eyeglass prescription. Using a phoropter to determine a prescription for eyeglasses. An eyeglass prescription is an order written by an eyewear prescriber, such as an optometrist, that specifies the value of all parameters the prescriber has deemed necessary to construct and/or dispense corrective lenses appropriate for a patient.

  5. Optical aberration - Wikipedia

    en.wikipedia.org/wiki/Optical_aberration

    Optical aberration. 1: Imaging by a lens with chromatic aberration. 2: A lens with less chromatic aberration. In optics, aberration is a property of optical systems, such as lenses, that causes light to be spread out over some region of space rather than focused to a point. [1]

  6. CHART #1: SIDE-BY-SIDE COMPARISON OF LEADING DEMOCRATIC ...

    images.huffingtonpost.com/bluchart1.pdf

    Plans No information found ! Proposes public insurance plan modeled after Medicare but separate and apart from it2! Establish new national health plan ¥ Will provide affordable, portable health coverage that is similar to plan available to Federal employees7 ¥ Open to individuals without access to group coverage, to

  7. Nearly 50% of American retirees underestimated their ... - AOL

    www.aol.com/finance/nearly-50-american-retirees...

    On average, retired Americans report spending 14% of their monthly income on healthcare costs such as insurance premiums, out-of-pocket expenses, prescription costs and more.

  8. LeBron and Bronny are getting deals, but how do the Lakers ...

    www.aol.com/lebron-bronny-getting-deals-lakers...

    The mission, however, isn't quite accomplished, even after both of the Jameses locked up new contracts, with LeBron reportedly agreeing to a $104 million deal, which will run over two seasons, and ...

  9. Corrective Optics Space Telescope Axial Replacement

    en.wikipedia.org/wiki/Corrective_Optics_Space...

    The Corrective Optics Space Telescope Axial Replacement (COSTAR) is an optical correction instrument designed and built by NASA. It was created to correct the spherical aberration of the Hubble Space Telescope ' s primary mirror , which incorrectly focused light upon the Faint Object Camera (FOC), Faint Object Spectrograph (FOS), and Goddard ...

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