In Pictures: 10 really small devices that could change the world

From the world's tiniest semiconductor laser to a bee-sized flying robot, these minuscule devices -- many of which cannot be seen by a human eye -- are changing our world.

The eyes have it Think your smartphone is small enough? David Wentzloff has been making tiny computers for years at the University of Michigan, but his latest project is a self-contained computing device that is about 1 cubic millimeter wide. Roughly the size of a pinhead, this nano-computer has two processors, a camera and a pressure sensor as well as a wireless transmitter and antenna. The whole thing is powered by a tiny solar cell and battery pack.

It's been designed and built to be implanted into the eyes of glaucoma patients to measure and transmit their ocular pressure every 15 minutes.

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