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  1. AIR - AAR Corp.

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  3. List of soft contact lens materials - Wikipedia

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

    Soft contact lenses may be easier to adjust to and are more comfortable than rigid gas permeable lenses. Newer soft lens materials include silicone-hydrogels to provide more oxygen to your eye while you wear your lenses. History. The first contact lenses were made of glass, in 1888.

  4. Telescopic sight - Wikipedia

    en.wikipedia.org/wiki/Telescopic_sight

    Because a typical telescopic sight has several optical elements with special characteristics and several air-to-glass surfaces, telescopic sight manufacturers use different types of optical coatings for technical reasons and to improve the image they produce. Lens coatings can increase light transmission, minimize reflections, repel water and ...

  5. Presbyopia - Wikipedia

    en.wikipedia.org/wiki/Presbyopia

    Presbyopia can be corrected using glasses, contact lenses, multifocal intraocular lenses, or LASIK (PresbyLASIK) surgery. The most common treatment is glass correction using appropriate convex lens. Glasses used to correct presbyopia may be simple reading glasses, bifocals, trifocals, or progressive lens.

  6. Contact lens - Wikipedia

    en.wikipedia.org/wiki/Contact_lens

    Contact lenses, or simply contacts, are thin lenses placed directly on the surface of the eyes. Contact lenses are ocular prosthetic devices used by over 150 million people worldwide, and they can be worn to correct vision or for cosmetic or therapeutic reasons.

  7. Alcon - Wikipedia

    en.wikipedia.org/wiki/Alcon

    Alcon Inc. ( German: Alcon AG) is a Swiss-American pharmaceutical and medical device company specializing in eye care products. It has a paper headquarters in Geneva, Switzerland but its operational headquarters are in Fort Worth, Texas, United States, where it employs about 4,500 people. [2]

  8. Vortex Optics - Wikipedia

    en.wikipedia.org/wiki/Vortex_Optics

    Vortex Optics. Precision binoculars, spotting scopes, riflescopes, and other optical instruments. Vortex Optics is an American manufacturer of special optical equipments for hunting, wildlife watching, outdoor recreation, shooting sports and law enforcement and military. [1]

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