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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. 10 Great Sites to Buy Cheap Eyeglasses Online - AOL

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

   Warby usually takes five to 10 business days to ship your order, with home try-ons arriving in about five days. 2. Zenni Optical. Probably one of the cheapest online eyewear stores out there ...

4. Driver's education - Wikipedia

   en.wikipedia.org/wiki/Driver's_education

   Driver student takes exercises in winter weather (Russia, 2002). Driver's education, driver education, driving education, driver's training, driver's ed, driving tuition or driving lessons is a formal class or program that prepares a new driver to obtain a learner's permit or driver's license.

5. Corrective lens - Wikipedia

   en.wikipedia.org/wiki/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.

6. Driver's licenses in the United States - Wikipedia

   en.wikipedia.org/wiki/Driver's_licenses_in_the...

   Permit required for one year if under 18 years of age. 16 years - No 11 p.m. to 6 a.m. driving for one year unless with 21 year or older licensed driver or driving to and from work. 17 years - No 1 a.m. to 5 a.m. driving for one year unless with 21 year or older licensed driver or driving to and from work. [a]

7. Eye examination - Wikipedia

   en.wikipedia.org/wiki/Eye_examination

   29271-4. An eye examination, commonly known as an eye test, [1] is a series of tests performed to assess vision and ability to focus on and discern objects. It also includes other tests and examinations pertaining to the eyes. Eye examinations are primarily performed by an optometrist, ophthalmologist, or an orthoptist.