I don't know when they were originally invented. But they were so to say re-invented 2007 by http://www.sunclipies.com . They invented a clip-in system,where thin-film lenses are clipped into the glasses from behind. The advantage is it is super light weight and they don't change the look of the eyeglasses, but just the lens colors. They are exactly tailored to each pair of eyeglasses, using rapid manufacturing technology.
Prescription sunglasses or clip-on sunglasses.
Yes clip on sunglasses are available in several colors and shades.
Sunglasses were invented in china.
Sunglasses were invented in china.
Clip-on sunglasses are made by most of the major sunglass manufacturers. Look for Eagle Eyes, Eyesave, Cocoons, Hilco, even designers like Calvin Klein and Fendi!
no.
Clip-on sunglasses can be purchased from high street shops such as Walgreens. Websites specializing in eyewear such as Frames Direct do stock them. They can also be purchased from online mega-retailers like Amazon or eBay.
Maybe 2003
To protect your eyes from the sun
Jim Jannard
The paper clip was not discovered. It was invented.
Sunglasses were invented around the late '20s but came into widespread use both military and civil during WWII