I saw this a while ago in National Geographic but the technology has improved since then to include a dial instead of a syringe to transfer the fluid. In the article a pair was given to a half blind tailor who could not even thread a thread through the eye of a needle. He put the glasses on, adjusted them and instantly went back to working. Holy shit, technology! (Call me when there's a monocle version)

These adaptive-lens eyeglasses were designed by Adlens to correct almost anybody's vision, all with the simple twist of a knob.

How they work: The lenses are hollow, with a plastic sheet stretched across it on the inside. When you twist the dial, fluid pumps in between the sheet and the lens. The fluid is clear and has a high refractive index. The more fluid that pumps in, the more the curvature of the sheet increases, making the lens more powerful.

Adlens markets these glasses for the developing world since things like opthamologists and opticians can be scarce there, but they could be useful in developed countries as well.

For instance: younger people whose eyes may worsen rapidly (I speak from experience) could just get one pair of these babies, negating the need to replace prescription lenses often. I mean, as long as you could tone down that dial (maybe replace it with a slider) and make the specs look at least a little more stylin'. But the question remains: If you turn the knob all the way do you get x-ray vision or just a headache? Hey! You're not wearing any underwear!

Keep those inventions coming and be sure to send a prototype to me and I'll review it for you right here on dannisblog.

Danni~