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  2. Oxygen permeability - Wikipedia

    en.wikipedia.org/wiki/Oxygen_permeability

    Oxygen permeability ( OP) is a parameter of a contact lens that expresses the ability of the lens to let oxygen reach the eye by diffusion. In soft contact lenses, it is dependent on the thickness of the lens and the material of the lens, especially concerning the water content. Because of this dependence on thickness, transmissibility level ...

  3. Presbyopia - Wikipedia

    en.wikipedia.org/wiki/Presbyopia

    Corrective lenses. Corrective lenses provide vision correction over a range as high as +4.0 diopters. People with presbyopia require a convex lens for reading glasses; specialized preparations of convex lenses usually require the services of an optometrist. Contact lenses can also be used to correct the focusing loss that comes along with ...

  4. Taxes 2023: What's the standard deduction for people over 65?

    www.aol.com/standard-deduction-people-over-65...

    The standard deduction for those over age 65 in 2023 (filing tax year 2022) is $14,700 for singles, $27,300 for married filing jointly if only one partner is over 65 (or $28,700 if both are), and ...

  5. Scleral lens - Wikipedia

    en.wikipedia.org/wiki/Scleral_lens

    Scleral lens. Side view displaying vaulted area of a scleral lens. A scleral lens, also known as a scleral contact lens, is a large contact lens that rests on the sclera and creates a tear -filled vault over the cornea. Scleral lenses are designed to treat a variety of eye conditions, many of which do not respond to other forms of treatment.

  6. Spherical aberration - Wikipedia

    en.wikipedia.org/wiki/Spherical_aberration

    Spherical aberration of collimated light incident on a concave spherical mirror. In optics, spherical aberration ( SA) is a type of aberration found in optical systems that have elements with spherical surfaces. This phenomenon commonly affects lenses and curved mirrors, as these components are often shaped in a spherical manner for ease of ...

  7. Best & Less - Wikipedia

    en.wikipedia.org/wiki/Best_&_Less

    Best & Less Group is the holding company which comprises Best & Less and the New Zealand clothing chain Postie. It was floated on the Australian Securities Exchange in July 2021 under the code BST. [7] In February 2023, CEO Rodney Orrock left the company to focus on his health. [8]

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