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2. Pinhole glasses - Wikipedia

   en.wikipedia.org/wiki/Pinhole_glasses

   Unlike conventional prescription glasses, pinhole glasses produce an image without the pincushion effect around the edges (which makes straight lines appear curved). While pinhole glasses are claimed to be useful for people who are both near- and far-sighted, they are not recommended [citation needed] for people with over 6 diopters of myopia.

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   $38 $60 Save $22 with coupon. See at Amazon. Style. ... The 50 best Christmas gifts for women in 2024; AOL. The very best gifts for men, from $2 to over $100; AOL.

4. Optical aberration - Wikipedia

   en.wikipedia.org/wiki/Optical_aberration

   The reverse, in which the perimeter is magnified more than the center, is known as "pincushion distortion" (figure 3b). This effect is called lens distortion or image distortion, and there are algorithms to correct it. Systems free of distortion are called orthoscopic (orthos, right, skopein to look) or rectilinear (straight lines). Figure 4

5. Presbyopia - Wikipedia

   en.wikipedia.org/wiki/Presbyopia

   Glasses prescribed to correct presbyopia may be simple reading glasses, bifocals, trifocals, or progressive lenses. [4] People over 40 are at risk for developing presbyopia and all people become affected to some degree. [1] An estimated 25% of people (1.8 billion globally) had presbyopia as of 2015. [3]

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   With prices starting at $60 per frame, prescription lenses included, Pair is already pretty affordable. However, for a limited time, Yahoo Life readers can save 15 percent on any Pair Eyewear ...

7. AOL-reviewed: The Renpho eye massager has almost 17,000 five ...

   www.aol.com/lifestyle/renpho-eyeris-review...

   The brand advises removing eyeglasses, contact lenses and false eyelashes before using the massager. The massager's 180 degree foldable, compact design makes it convenient for travel, and the ...