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2. Is Amazon Prime Worth It? Here's a Look at Costs, Benefits - AOL

   www.aol.com/amazon-prime-worth-heres-look...

   Amazon Prime costs $14.99 a month or $139 a year, but new members can test Prime with a 30-day free trial before committing. Those who canceled their Amazon Prime membership and haven’t been ...

3. These Stylish, Doctor-Approved Reading Glasses Can Help ... - AOL

   www.aol.com/best-doctor-approved-reading-glasses...

   St Michel Reading Glasses. Though plastic frames are typically a popular choice for readers, metal glasses are also a great option—in fact, the American Academy of Ophthalmology notes that metal ...

4. Best and worst places to buy your next pair of glasses - AOL

   www.aol.com/news/2010-11-02-best-worst-places-to...

   Choose designer frames, ultra-thin lenses, progressive lenses and lens coatings and it's easy to drop over $400 for the pair. Bad service and poor quality would make the experience even more painful.

5. 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. Current bifocals and progressive lenses are static, in that the user has to change their eye position ...

6. Prism correction - Wikipedia

   en.wikipedia.org/wiki/Prism_correction

   Prism dioptres. Prism correction is commonly specified in prism dioptres, a unit of angular measurement that is loosely related to the dioptre. Prism dioptres are represented by the Greek symbol delta (Δ) in superscript. A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. [2]

7. Zenni Optical - Wikipedia

   en.wikipedia.org/wiki/Zenni_Optical

   Zenni Optical mail order. Zenni Optical was founded in 2003 by Tibor Laczay and Julia Zhen. [1] [2] Before being renamed to Zenni Optical when it began offering $7 and $8 glasses, the company was named 19dollareyeglasses.com. [3] [4] [5] Around 2014, co-founder Zhen acquired the building occupied by the Marin Independent Journal to house Zenni. [6]