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  2. 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.

  3. Adjustable-focus eyeglasses - Wikipedia

    en.wikipedia.org/wiki/Adjustable-focus_eyeglasses

    Adjustable focus eyeglasses are eyeglasses with an adjustable focal length. They compensate for refractive errors (such as presbyopia) by providing variable focusing, allowing users to adjust them for desired distance or prescription, or both. Current bifocals and progressive lenses are static, in that the user has to change their eye position ...

  4. The Real Adventures of Jonny Quest - Wikipedia

    en.wikipedia.org/wiki/The_Real_Adventures_of...

    [110] [111] Critics appreciated that the books may have drawn kids to reading, especially those interested in technology. [112] [113] The books credited Gregory Benford as the scientific advisor for the show, and each novella featured an epilogue by him speculating about future technological developments. The novellas made use of the first ...

  5. Glasses - Wikipedia

    en.wikipedia.org/wiki/Glasses

    Glasses, also known as eyeglasses and spectacles, are vision eyewear with clear or tinted lenses mounted in a frame that holds them in front of a person's eyes, typically utilizing a bridge over the nose and hinged arms, known as temples or temple pieces that rest over the ears. Man with glasses. Glasses are typically used for vision correction ...

  6. The School Supplies Kids Will *Actually* Use, According to a ...

    www.aol.com/school-supplies-kids-actually...

    Our Favorite School Supplies By Age in 2024. Best for early education: Owala FreeSip water bottle, $28. Best for elementary school: Yeti Daytrip lunch box, $80. Best for middle school: Marble ...

  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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