A significant part of the human population wears glasses (or will need to wear them in the future). Most glasses or bifocals have a maximum of two focuses, one for each lens. This has been the way of ...

The Korea Research Institute of Standards and Science has developed a detachable acoustic lens that allows for easy adjustment of the focal length in ultrasonic inspection equipment. Much like ...

A University of Utah team have a working prototype of a new twist on fluid-filled lenses for correction of vision problems: automatic adjustment and refocus depending on what you’re looking at.