PixelOptics is demoing what it claims is the most significant development in prescription eyewear in 50 years: emPower! PixelOptics' glasses offer up better field of view and less distortion than traditional lenses by sandwiching an LCD-like layer in the glass that can be focused with an electrical charge. The set's inbuilt micro-machine accelerometer detects when you tip your head down -- when you read, for example -- and triggers the glasses' focal area for presbyopia. The emPower! lens can also be set to manual and is then activated by a swipe of your finger on the frame. The kit includes the glasses and the inductive charger that wil