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2. Shoppers love this $7 eyeglass cleaning kit to get lenses ...

   www.aol.com/lifestyle/shoppers-love-this-7...

   Koala Eyeglass Lens Cleaner Spray Kit. $8 $9 Save $1. Have streak-free glasses for years to come with this mega-popular mega-kit. Includes one bottle of gentle, effective cleaner and a microfiber ...

3. Amazon's No. 1 bestselling eyeglass cleaning kit is on sale - AOL

   www.aol.com/lifestyle/koala-eyeglass-cleaner...

   So, how does an eyeglass cleaning kit from a small business earn over 34,000 five-star fans and No. 1 Bestseller status on Amazon? By being awesome, it seems. Shoppers say the Koala Eyeglass Lens ...

4. Wait, So Do Blue Light Glasses Actually Work? Here's What ...

   www.aol.com/wait-blue-light-glasses-actually...

   Some blue-light glasses also include a plus lens to help bring your focus in. These might help reduce eye strain. It is expected that clear lenses, not blue-filtering, with a plus power would work ...

5. Prism (optics) - Wikipedia

   en.wikipedia.org/wiki/Prism_(optics)

   Prism (optics) An optical prism is a transparent optical element with flat, polished surfaces that are designed to refract light. At least one surface must be angled — elements with two parallel surfaces are not prisms. The most familiar type of optical prism is the triangular prism, which has a triangular base and rectangular sides.

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. Color blind glasses - Wikipedia

   en.wikipedia.org/wiki/Color_blind_glasses

   Color blind glasses or color correcting lenses are light filters, usually in the form of glasses or contact lenses, that attempt to alleviate color blindness, by bringing deficient color vision closer to normal color vision or to make certain color tasks easier to accomplish. Despite its viral status, the academic literature is generally ...