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2. 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.

3. List of United States pay television channels - Wikipedia

   en.wikipedia.org/wiki/List_of_United_States_pay...

   The following is a list of pay television networks or channels broadcasting or receivable in the United States, organized by broadcast area and genre. Some television providers use one or more channel slots for east/west feeds, high definition services, secondary audio programming and access to video on demand .

4. 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.

5. Olympic-Obsessed Golden Retriever Can't Take His Eyes Off the ...

   www.aol.com/olympic-obsessed-golden-retriever...

   Despite their duller eyesight, dogs can be visually attracted to the content playing on a television screen. While we have three types of color-processing retinas in our eyes, dogs only have two ...

6. List of DTT channels in the United Kingdom - Wikipedia

   en.wikipedia.org/wiki/List_of_DTT_channels_in...

   These regional channels are licensed by Ofcom under the Local Digital Television Programme, [44] with That's TV currently broadcasting as a semi-national network (one which also uses the That's Christmas/That's New Year name over festive periods) with local opt-outs and a service streaming to the whole country via the VisionTV platform on channel 264 and as That's TV Gold on Freeview channel 91.

7. List of HD channels in Canada - Wikipedia

   en.wikipedia.org/wiki/List_of_HD_channels_in_Canada

   Golf Channel HD. HLN HD. MLB Network HD. MSNBC HD. NASA TV HD. NFL Network HD. Paramount Network HD. Playboy TV HD.

8. List of HD channels in the United Kingdom - Wikipedia

   en.wikipedia.org/wiki/List_of_HD_channels_in_the...

   This is a list of current high definitionchannels that are available in the United Kingdom, together with those coming in the future, and those that have ceased broadcasting. All HD channels in the UK broadcast at 1080i, apart from Sky Sports Main Event UHD channel and the BT Sport Ultimate 4K. [1]HD channels can dynamically switch between ...

9. High-definition television in the United States - Wikipedia

   en.wikipedia.org/wiki/High-definition_television...

   High-definition television (HDTV) in the United States was introduced in 1998 and has since become increasingly popular and dominant in the television market. Hundreds of HD channels are available in millions of homes and businesses both terrestrially and via subscription services such as satellite, cable and IPTV.