Eyejusters double-lens glasses offer DIY vision correction

Fixed-lens glasses are so last year -- if U.K.-based company Eyejusters has anything to say about it, that is.

Eyejusters' "SlideLens" technology enables users to turn a dial on one of the glasses' temple arms to slide two lenses across one another and thereby adjust the focus. That just might help some of the world's estimated 670 million people who need glasses but don't have them manipulate their own prescriptions.

Eyejusters calculates that its two types of glasses -- positive power (to correct near-sightedness) and negative power (to correct far-sightedness) -- could help roughly 90 percent of people whose poor vision can be corrected using glasses.

The tech alone is inspired, but so is its philanthropic focus. The company will let you buy your own pair for just $40, become a distributor yourself by preordering a distribution kit replete with glasses and vision charts, and even help other distributors get these glasses to those who need them by joining Eyejusters' Give & Get Community.

Self-adjusting glasses aren't exactly breaking news, but given the coolest pair to hit the block in 2009, called TruFocals, retailed for $895, I'd say the $40 philanthropically bent Eyejusters represent a full rotation in the right direction.