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2. Orthokeratology - Wikipedia

   en.wikipedia.org/wiki/Orthokeratology

   Orthokeratology lens. Orthokeratology, also referred to as Night lenses, Ortho-K, OK, Overnight Vision Correction, Corneal Refractive Therapy (CRT), Accelerated Orthokeretology, Cornea Corrective Contacts, Eccentricity Zero Molding, and Gentle Vision Shaping System (GVSS), is the use of gas-permeable contact lenses that temporarily reshape the cornea to reduce refractive errors such as myopia ...

3. Color blind glasses - Wikipedia

   en.wikipedia.org/wiki/Color_blind_glasses

   Strongly tinted sun glasses [24] or contact lenses [25] are often used to decrease luminosity. Red-tinted lenses are very common, but different hues are used to optimize the comfort of the wearer. [26] Achromats often use red filters while driving to help identify traffic lights when position cues are not sufficient. Similar to the operation of ...

4. Night-vision device - Wikipedia

   en.wikipedia.org/wiki/Night-vision_device

   United States: a 2010–2011 summary of state hunting regulations for the use of night-vision equipment in hunting [99] listed 13 states in which the equipment is prohibited, 17 states with various restrictions (e.g. only for certain non-game species, and/or in a certain date range), and 20 states without restrictions. It did not summarize the ...

5. List of common misconceptions about science, technology, and ...

   en.wikipedia.org/wiki/List_of_common...

   Color blindness cannot be significantly alleviated by glasses or lenses. While there are lenses marketed towards the colorblind, their efficacy is doubted by professionals, and they do not enable wearers to see new colors. [339] A fever from infection does not cause brain damage by itself.

6. Are deaf drivers under any restrictions? Here’s what states ...

   www.aol.com/news/deaf-drivers-under-restrictions...

   Back in 1920 there were a few states that, for a short time, didn’t allow deaf people to get a driver’s license. Apart from those states during that time, deafness has not disqualified people ...

7. Visual impairment - Wikipedia

   en.wikipedia.org/wiki/Visual_impairment

   Visual or vision impairment (VI or VIP) is the partial or total inability of visual perception.In the absence of treatment such as corrective eyewear, assistive devices, and medical treatment, visual impairment may cause the individual difficulties with normal daily tasks, including reading and walking. [6]