TruFocals do bifocals one better. “Good for reading the paper, watching a movie, and everything in between,” these Benjamin Franklin–style specs have a thin, liquid-filled membrane that can be instantly transformed from a distance lens to a reading lens. A flick of the switch on the bridge of the nosepiece gives you “adjustable focus on the go.”
Price: $895
Contact: Trufocals.com
Source: Popular Science