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2. Presbyopia - Wikipedia

   en.wikipedia.org/wiki/Presbyopia

   People with presbyopia require a convex lens for reading glasses; specialized preparations of convex lenses usually require the services of an optometrist. [15] Contact lenses can also be used to correct the focusing loss that comes along with presbyopia. Multifocal contact lenses can be used to correct vision for both the near and the far.

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4. Refractive error - Wikipedia

   en.wikipedia.org/wiki/Refractive_error

   Eyeglasses work as an added lens of the eye serving to bend the light to bring it to focus on the retina. Depending on the eyeglasses, they serve many functions. [36] Reading glasses These are general over-the-counter glasses which can be worn for easier reading, especially for defective vision due to aging called presbyopia.

5. 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 ...

6. Eye protection - Wikipedia

   en.wikipedia.org/wiki/Eye_protection

   Welding glass protects against glare and flying sparks. It is a more extreme implementation of the same idea as sunglasses, suited to the more intense light generated during welding. Arc welding goggles must be much darker than blowtorch goggles. Shades 12, 13, and 14 welding glass must be used to stare directly at the sun or a solar eclipse.

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8. Amber Heard Speaks Out on Blake Lively’s Allegations After ...

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   Amber Heard has spoken out in support of Blake Lively amid her allegations of sexual harassment against “It Ends With Us” director and co-star Justin Baldoni. In a complaint filed on Friday ...

9. Shop the coziest gift ideas for all your favorite homebodies ...

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   Find the best gift ideas for cold winter nights. From Cozy slippers to comfy chairs, there's something for everyone.