Hidden in the frames of the otherwise normal-looking glasses, are a microchip, micro-accelerometer and miniature batteries. Each lens has a transparent LCD layer that can electronically change its molecular structure, changing the focus only as needed. If you tilt your head down say to read a book or peek at an object up close, the accelerometer automatically detects the motion, sending a signal to the LCD that alters how light is refracted, change the prescription quietly and in, well, a blink of the eye. You can also put the glasses in manual mode.
So why would you choose these glasses compared to conventional progressive lenses? One answer: With ordinary progressives, you might be lying on a couch or bed and tilting your head up to watch TV, which would otherwise be a challenge if you’re peering out of that portion of the lens that isn’t meant for distance viewing. With emPower, you’d only summon a lens optimized for reading or closeups when you needed to.
Read More at: http://content.usatoday.com/communities/technologylive/post/2011/01/empower-electronic-eyeglass-lenses/1
Green Real Estate Appraiser 