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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. List of optometric abbreviations - Wikipedia

   en.wikipedia.org/wiki/List_of_optometric...

   Description ( notes ) AC. Anterior chamber. fluid-filled space between the iris and the endothelium. AC 4/4. Grade 4 anterior chamber angle. open angle between cornea and iris. AC 3/4. Grade 3 anterior chamber angle.

4. Corrective lens - Wikipedia

   en.wikipedia.org/wiki/Corrective_lens

   Corrective lens. A corrective lens is a transmissive optical device that is worn on the eye to improve visual perception. The most common use is to treat refractive errors: myopia, hypermetropia, astigmatism, and presbyopia. Glasses or "spectacles" are worn on the face a short distance in front of the eye.

5. ViXion01 glasses reduce eyestrain by doing the focusing for you

   www.engadget.com/vixion01-glasses-reduce...

   At the heart of the ViXion01 is its front-facing ToF (time of flight) sensor, which lets it measure the distance of your target object and quickly adjust its lenses on the go. The basic concept is ...

6. Ray-Ban Meta smart glasses hands-on: Techy sunglasses you ...

   www.engadget.com/ray-ban-meta-hands-on-techy...

   The Ray-Ban Meta smart glasses are available for pre-order today starting at $299, $329 with polarized lenses or $379 for transition lenses with official sales slated for October 17. On Wednesday ...

7. Razer Anzu review: Smart glasses that are almost great - Engadget

   www.engadget.com/razer-anzu-smart-glasses-review...

   Razer Anzu smart glasses review photo. Right side profile of a man wearing the Razer Anzu smart glasses with his right index finger up to the touch-sensitive arm. Like the Echo Frames, the small ...