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2. Bifocals - Wikipedia

   en.wikipedia.org/wiki/Bifocals

   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 . History

3. We found 14 personalized gifts from Walmart that look more ...

   www.aol.com/lifestyle/we-found-14-personalized...

   Personalized gifts don't have to be expensive or purchased months in advance. Give a thoughtful gift from Walmart this year, starting at just $5.

4. Corrective lens - Wikipedia

   en.wikipedia.org/wiki/Corrective_lens

   The progressive addition lens (PAL, also commonly called a no-line or varifocal lens) eliminates the line in bi/tri-focals and is very complex in its profile. PALs are a continuously variable parametric surface that begins using one spherical surface base curve and ends at another, with the radius of curvature continuously varying as the ...

5. These are the top 100 Black Friday deals, according to Walmart

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   TVs. onn. Full motion TV wall mount for $29 (save $20) Hisense 65" Class R6 4K Smart TV for $178 (save $100) TCL 43" Class Q5 Smart TV for $178 (save $70)

6. The top 100 Cyber Monday deals, according to Walmart - AOL

   www.aol.com/lifestyle/the-top-100-cyber-monday...

   See the 100 most popular deals from Black Friday at Walmart you can still shop today. The top 100 Cyber Monday deals, according to Walmart — see the must-shop sales before they sell out Skip to ...

7. 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.