glasses

Glasses are a pairs of lenses set in a frame and worn in front of the eyes, usually to correct refractive errors or protect the eyes. Sunglasses allow for better vision by protecting the eyes from bright light and ultraviolet radiation during the day, while safety glasses are used as protection against flying debris, wind or radiation.

Pin hole glasses, which are said to help correct vision errors, are an exception from this definition in that they do not use lenses, but an opaque plastic sheet filled with pinhole-sized perforations. Unlike traditional glasses which refract the light, pinhole glasses reduce blur circles in retinal images and increase depth of field, clarifying the image.

Modern day frames for glasses rest on the nose and ears, while some obsolete models include the pince-nez, which rested on the bridge of the nose but missed earpieces; the monocle, which enhanced vision for one eye only; and the lorgnette, which was fitted with a handle rather than earpieces.

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Original Technorati articles tagged “glasses”

• in Technology
  Google's Project Glass Brings the Future Now
  Google working on futuristic HUD display called 'Project Glass'.
  by reedsanders / on Apr 4, 2012
• in Entertainment
  Spectacular Specs: Cult Eyewear Eyes Spectacles
  Experience a breath-taking collection of unique eyewear, and meet the designers behind each pair.
  by missbobetier / on Dec 5, 2011
• in Videos
  3D With No Glasses
  So is this real or a hoax? 3D Technology without the glasses. Weird.
  by cebsilver / on Jan 17, 2011

Latest blogosphere posts tagged “glasses”

 

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• Smart Buy Glasses Discount Coupons

  
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• GlassesUSA coupon

  
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