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2. Adjustable-focus eyeglasses - Wikipedia

   en.wikipedia.org/wiki/Adjustable-focus_eyeglasses

   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 ...

3. 10 Great Sites to Buy Cheap Eyeglasses Online - AOL

   www.aol.com/10-great-sites-buy-cheap-140036394.html

   Progressive lenses (those that function as both reading and distance glasses) start at $295, while tinted prescription lenses cost an additional $100 from the base model. ... and a $10 Amazon gift ...

4. Shooting glasses - Wikipedia

   en.wikipedia.org/wiki/Shooting_glasses

   In contrast to most other eye glasses, shooting glasses usually only have one lens that corrects the ametropia of the dominant eye, which is used for aiming.This lens is selected in such a way that the maximum visual acuity lies on the font sight line element near the muzzle of the (non-magnifying) open type or diopter and globe type match sight line elements to get three points positioned in ...

5. Corrective lens - Wikipedia

   en.wikipedia.org/wiki/Corrective_lens

   In glasses with powers beyond ±4.00D, the vertex distance can affect the effective power of the glasses. [4] A shorter vertex distance can expand the field of view, but if the vertex distance is too small, the eyelashes will come into contact with the back of the lens, smudging the lens and causing annoyance for the wearer.

6. It’s the best time of year to buy golf gear—here are the ...

   www.aol.com/lifestyle/its-the-best-time-of-year...

   Titleist Tour Speed Golf Balls. $28 $37 Save $9. This 12-pack of golf balls from Titelist is a whopping 24% off this weekend, and if you’re an Amazon Prime member, you can get them in time for ...

7. Smartglasses - Wikipedia

   en.wikipedia.org/wiki/Smartglasses

   Man wearing a 1998 EyeTap, Digital Eye Glass. [1] Smartglasses or smart glasses are eye or head-worn wearable computers. Many smartglasses include displays that add information alongside or to what the wearer sees. [1][2][3] Alternatively, smartglasses are sometimes defined as glasses that are able to change their optical properties, such as ...