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  2. List of soft contact lens materials - Wikipedia

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

    Air Optix Night & Day Aqua Lotrafilcon B: 1: 33: 110-138: 1.0: 0.08: O 2 Optix, Air Optix for Astigmatism, Air Optix Aqua, Air Optix Aqua Multifocal, Air Optix Colors

  3. Contact lens - Wikipedia

    en.wikipedia.org/wiki/Contact_lens

    Contact lens. A pair of contact lenses, positioned with the concave side facing upward. Putting contacts in and taking them out. One-day disposable contact lenses with blue handling tint in blister-pack packaging. Contact lenses, or simply contacts, are thin lenses placed directly on the surface of the eyes. Contact lenses are ocular prosthetic ...

  4. Presbyopia - Wikipedia

    en.wikipedia.org/wiki/Presbyopia

    Eyeglasses, [ 1] contact lenses [ 2] Frequency. 25% currently; [ 3] all eventually affected [ 1] Presbyopia is physiological insufficiency of accommodation associated with the aging of the eye that results in progressively worsening ability to focus clearly on close objects. [ 4] Also known as age-related farsightedness [ 5] (or age-related ...

  5. 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

  6. Why it’s important to make new friends after 65 (and how to ...

    www.aol.com/why-important-friends-65-131300893.html

    Socializing and meeting new people can help your brain function. “Making new friends is positive, because it’s new information, so it’s a new kind of stimulation,” says Karlene Ball, Ph.D ...

  7. Bifocals - Wikipedia

    en.wikipedia.org/wiki/Bifocals

    Bifocals. A bifocal lens with areas of differing magnification. Bifocals with separate lenses. In this case, the Swedish ethnologist Jan-Öjvind Swahn [ sv]. Bifocals are eyeglasses with two distinct optical powers. Bifocals are commonly prescribed to people with presbyopia who also require a correction for myopia, hyperopia, and/or astigmatism .

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