If someone mentions the phrase “high-tech glasses,” you probably assume that person is talking about Google Glass, the smartphone-on-a-headband that Google hopes to offer for sale next year.
The truth is, though, that 2013 has been the Year of the High-Tech Glasses in other, quieter ways. At least three new eyeglass technologies have arrived. They’re not intended to bring the Internet to your eyeball. They have a more traditional goal: improving your vision.
Here’s a look at three.
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