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2. Edinburgh Crystal - Wikipedia

   en.wikipedia.org/wiki/Edinburgh_Crystal

   Edinburgh Crystal was a cut glass manufactured in Scotland from c. 1820s[ 1] to 2006, and was also the name of the manufacturing company. In addition to drinking glasses, Edinburgh Crystal made decanters, bowls, baskets, and bells, in several ranges. The Edinburgh Crystal company went into administration in 2006.

3. Progressive lens - Wikipedia

   en.wikipedia.org/wiki/Progressive_lens

   Progressive lenses are corrective lenses used in eyeglasses to correct presbyopia and other disorders of accommodation. They are characterised by a gradient of increasing lens power, added to the wearer's correction for the other refractive errors. The gradient starts at the wearer's distance prescription at the top of the lens and reaches a ...

4. Glasses - Wikipedia

   en.wikipedia.org/wiki/Glasses

   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. Glasses are typically used for vision correction, such as ...

5. Stop Squinting and Protect Your Eyes With Some High-Quality ...

   www.aol.com/news/12-best-reading-glasses-better...

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6. Reading glasses - Wikipedia

   en.wikipedia.org/?title=Reading_glasses&redirect=no

   This page was last edited on 24 August 2016, at 01:16 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike License 4.0; additional terms may ...

7. Corrective lens - Wikipedia

   en.wikipedia.org/wiki/Corrective_lens

   Higher-quality optical-grade glass materials exist (e.g. Borosilicate crown glasses such as BK7 ( n d = 1.51680 , V d = 64.17 , D = 2.51 g/cm³ ), which is commonly used in telescopes and binoculars, and fluorite crown glasses such as the best optical quality low dispersion glass currently in production, N-FK58 made by the German company Schott ...

8. Magnifying glass - Wikipedia

   en.wikipedia.org/wiki/Magnifying_glass

   A magnifying glass is a convex lens that is used to produce a magnified image of an object. The lens is usually mounted in a frame with a handle. Beyond its primary function of magnification, this simple yet ingenious tool serves a variety of purposes. It can be employed to focus sunlight, harnessing the Sun's rays to create a concentrated hot ...

9. Intraocular lens - Wikipedia

   en.wikipedia.org/wiki/Intraocular_lens

   Most IOLs fitted today are fixed monofocal lenses matched to distance vision. However, other types are available, such as a multifocal intraocular lens that provides multiple-focused vision at far and reading distance, and adaptive IOLs that provide limited visual accommodation. Multifocal IOLs can also be Trifocal IOLs or extended depth of ...