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2. 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 ...

3. 9 Myths About Aging That People Need to Stop Believing ... - AOL

   www.aol.com/9-myths-aging-people-stop-171500618.html

   8.'Old People Can’t Drive'. Many seniors are excellent drivers, with years of experience that make them some of the safest on the road. Sure, some might take it a bit slower, but that’s just ...

4. Stereoscope - Wikipedia

   en.wikipedia.org/wiki/Stereoscope

   Stereoscope. A stereoscope is a device for viewing a stereoscopic pair of separate images, depicting left-eye and right-eye views of the same scene, as a single three-dimensional image. A typical stereoscope provides each eye with a lens that makes the image seen through it appear larger and more distant and usually also shifts its apparent ...

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. This 1 Simple Thing May Impact How You Age, Study Finds - AOL

   www.aol.com/1-simple-thing-may-impact-123000642.html

   For every two hours of sitting to watch TV, study participants had a 12% drop in the odds that they would age in a healthy way. However, the study also found that having two additional hours of ...

7. 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 ...