That's right, this is a computer you stcik in your eye, to help prevent blindness in glaucoma patients.
"Patients with glaucoma get excess pressure in their eyeball, which can damage the optic nerve, leading to blindness. This needs to be monitored on a regular basis, and this could be much easier with this little device. It's being described as the first millimeter-scale computer and it's just one cubic-millimeter in size. Incredibly, it only consumes 5.3 nanowatts.
The computer is charged up by solar power and is able to transmit the data wirelessly."