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  2. Adjustable-focus eyeglasses - Wikipedia

    en.wikipedia.org/wiki/Adjustable-focus_eyeglasses

    [clarification needed] A tiny mechanism, actuated by the slider, simultaneously controls both flexible lenses to assure appropriate near vision tracking in both eyes. Another type of opto-mechanical lens is the design of Joshua Silver , and uses liquid pressure against a diaphragm to control focus of a lens. [ 5 ]

  3. Are blue light glasses really worth it? A new analysis says ...

    www.aol.com/finance/blue-light-glasses-really...

    The researchers hope to conduct further research on the effects of blue light glasses on sleep, eye health, and more, Dr. Sumeer Singh, an author on the study from the Downie Laboratory, said in ...

  4. Why Blue Light Glasses May End Up Preventing Disrupted Sleep

    www.aol.com/lifestyle/why-blue-light-glasses-may...

    Here are the best blue-light blocking glasses you can buy in 2023. Our experts are also revealing if they really work. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please ...

  5. Blue light-blocking glasses don't protect eyes or improve ...

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    A new review finds that the popular lenses don't help with eye strain, alertness or sleep. Blue light-blocking glasses don't protect eyes or improve sleep, study finds Skip to main content

  6. Blue light spectrum - Wikipedia

    en.wikipedia.org/wiki/Blue_light_spectrum

    It emits more blue light than traditional incandescent bulbs, potentially impacting the quality of sleep and eye health if used excessively at night. [2] [8] A person using a smartphone at night. Blue light is emitted by digital screens such as computers, tablets, smartphones, and televisions, which can lead to extended exposure in modern lives ...

  7. Glasses - Wikipedia

    en.wikipedia.org/wiki/Glasses

    Man with glasses. A woman with 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.

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