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  2. Pince-nez - Wikipedia

    en.wikipedia.org/wiki/Pince-nez

    Pince-nez (/ ˈ p ɑː n s n eɪ / or / ˈ p ɪ n s n eɪ /, plural form same as singular; [1] French pronunciation:) is a style of glasses, popular in the late 19th and early 20th centuries, that are supported without earpieces, by pinching the bridge of the nose. The name comes from French pincer, "to pinch", and nez, "nose".

  3. American Optical Company - Wikipedia

    en.wikipedia.org/wiki/American_Optical_Company

    The AN6531 Comfort Cable aviator sunglasses frame kept being issued by the U.S. military as No. MIL-G-6250 glasses after World War II with different lenses as Type F-2 (arctic) and Type G-2 aviator sunglasses but fitted with darker lenses until their substitute, the Type HGU-4/P aviator sunglasses, became available in the late 1950s. [14] [15] [16]

  4. Aviator sunglasses - Wikipedia

    en.wikipedia.org/wiki/Aviator_sunglasses

    The AN6531 Comfort Cable aviator sunglasses frame kept being issued by the U.S. military as No. MIL-G-6250 glasses after World War II with different lenses as Type F-2 (arctic) and Type G-2 aviator sunglasses but fitted with darker lenses until their substitute the Type HGU-4/P aviator sunglasses became available in the late 1950s.

  5. Sunglasses - Wikipedia

    en.wikipedia.org/wiki/Sunglasses

    Nose bridges provide support between the lens and the face. They also prevent pressure marks caused by the weight of the lens or frame on the cheeks. People with large noses may need a low nose bridge on their sunglasses. People with medium noses may need a low or medium nose bridge.

  6. Optical coating - Wikipedia

    en.wikipedia.org/wiki/Optical_coating

    A woman wears sunglasses featuring a highly reflective optical coating Diagram of a dielectric mirror. Thin layers with a high refractive index n 1 are interleaved with thicker layers with a lower refractive index n 2. The path lengths l A and l B differ by exactly one wavelength, which leads to constructive interference.

  7. Groucho glasses - Wikipedia

    en.wikipedia.org/wiki/Groucho_glasses

    Considered one of the most iconic and widely used of all novelty items in the world, Groucho glasses were marketed as early as the 1940s [2] and are instantly recognizable to people throughout the world. [3] The glasses are often used as a shorthand for slapstick [4] and are depicted in the Disguised Face (🥸) emoji. [5] [6]

  8. Acanthoma fissuratum - Wikipedia

    en.wikipedia.org/wiki/Acanthoma_fissuratum

    Acanthoma fissuratum, also known as granuloma fissuratum is a cutaneous condition characterized by local thickening of the skin in response to pressure caused by an eyeglass frame. [1]: 777 Acanthoma fissuratum is a hard, folded, flesh-colored lesion or plaque with a central groove. It affects the ear and is common in people wearing poorly ...

  9. Anti-scratch coating - Wikipedia

    en.wikipedia.org/wiki/Anti-scratch_coating

    Scratch-resistant coatings are added to glasses due to scratches' extreme ability to impact a wearer's vision. Even when optical glasses are made of high scratch-resistances glass, polycarbonate, or CR-39, coatings are still used. Optical coatings include diamond-like carbon (DLC) and anti-reflective-scratch hybrid coatings. Diamond-like Carbon ...

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