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  2. Rimless eyeglasses - Wikipedia

    en.wikipedia.org/wiki/Rimless_eyeglasses

    Rimless eyeglasses. Rimless eyeglasses are a type of eyeglasses in which the lenses are mounted directly to the bridge or temples. The style is divided into two subtypes: three-piece glasses are composed of lenses mounted to a bridge and two separate temple arms, while rimways (also called cortlands) feature a supporting arch that connects the ...

  3. Crown glass (optics) - Wikipedia

    en.wikipedia.org/wiki/Crown_glass_(optics)

    Crown glass is a type of optical glass used in lenses and other optical components. It has relatively low refractive index (≈1.52) and low dispersion (with Abbe numbers between 50 and 85). Crown glass is produced from alkali-lime silicates containing approximately 10% potassium oxide and is one of the earliest low dispersion glasses .

  4. Corrective lens - Wikipedia

    en.wikipedia.org/wiki/Corrective_lens

    Corrective lens. A pair of contact lenses, positioned with the concave side facing upward. 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.

  5. The best skin care routine for your 50s, according to ... - AOL

    www.aol.com/lifestyle/best-skin-care-routine-for...

    Lipids like ceramides and fatty acids are ideal for mature skin types as they work to strengthen the skin's barrier and boost hydration by preventing moisture loss. "Since the skin tends to lose ...

  6. Optical coating - Wikipedia

    en.wikipedia.org/wiki/Optical_coating

    Optical coating. An optical coating is one or more thin layers of material deposited on an optical component such as a lens, prism or mirror, which alters the way in which the optic reflects and transmits light. These coatings have become a key technology in the field of optics. One type of optical coating is an anti-reflective coating, which ...

  7. Are you 55 and eyeing retirement in the next 10 years? Here ...

    www.aol.com/finance/55-eyeing-retirement-next-10...

    Remember, even a small amount can add up over time. For example, if you’re 55 and earn $80,000 a year, a 1% annual increase could add up to an additional $16,779 by age 67, according to ...