Next generation spectacles?

Today.. There's a new kid on the block..

Called TruFocals

Each TruFocals lens—about three millimeters thick—actually consists of two magnetically attached lenses. The lens closer to the eye is flexible, with a transparent distensible (expandable) membrane attached to a clear rigid surface. The space between the membrane and the clear rigid surface holds a small amount of clear silicon fluid. A sliding lever on the bridge of the eyeglasses is used to push the fluid forward to alter the shape of the membrane and, by extension, the flexible lens.

Full article .. Read this http://www.scientificamerican.com/article.cfm?id=nasa-adjustable-astronaut-eyewear

Maybe this is the face of 21st century eyewear! Since people all develop presbyopia in their 40's (or so), and the baby boomers are all presbyopic, there have been millions of dollars put into research to combat its effects.To be honest, no-one really likes wearing glasses, and all lens types have limitations.I'm sure that this technology can only get better, but good on them for developing a workable first step.