Using liquid crystal technology, PixelOptics have designed some new spectacle lenses, that self-adjust their optical properties … as the wearer of the spectacles tilts his head.
Generally when using bi-focals, the user’s head will be raised to use the distance part of their glasses, but then their head will dip to use the near-focusing reading portion of the lens.
With an accelerometer to detect the movement of the head, and liquid crystal technology to alter the optical power of the lens, these glasses can automatically change the optical properties of the lenses based upon where the wearer is looking.
The frames appear to be quite good looking and of high quality, and availability is said to be from around April.