It is Adlens that decided that what works for field glasses may as well work for city glasses, uhm, any glasses. Their adaptive-lens eyeglasses can become more or less powerful, obedient to your turn of the dial knob.
The trick is as follows. The eyeglasses have hollow lenses with a plastic sheet attached to them from the inside. By adjusting the knob you inject into the space between the lens and the sheet a special clear fluid with high refractive properties. The amount of the fluid pumped in will regulate the curvature of the sheet – the more fluid in, the more curved the sheet and the more powerful the glasses.
Adlens thought to target developing countries whose people may have difficulties getting a good optician for themselves, but actually the vision-improving gadget may come in handy for a lot of people who require two pairs of different glasses for reading and for walking or may be indispensable for individuals with a dropping eyesight. Who knows, even a common glass wearer may find it worthwhile to adjust his glasses to the changing conditions around.
Source of the image: Wanderlustmind.com.
