Admittedly, the glasses shown in the picture above are ugly, but they are a prototype.  Developed by University of Utah scientists, they could make progressive lenses obsolete.  Using electronically activated lenses and infrared distance meters, they can focus automatically on whatever you’re looking at, whether it’s far or close up.

As some of us get older, the lenses in our eyes can no longer easily change focus between objects that are different distances from our view.  As a result, progressive-lens eyeglasses are designed with lenses that are divided into different focal zones.  If a practical commercial lenses can be produced using the technology demonstrated by the University of Utah prototype, it would be a significant leap forward.

You can read more about this innovation in the following article:

ENGADGET: Electronic glasses auto-focus on what you’re looking at