Researchers at ETH Zurich have built a microrobot that can potentially serve as a diagnostic tool for measuring oxygen at the retina, a key indicator for Glaucoma. A mere millimeter in length and one third of a millimeter in diameter, the robot can move through the vitreous, guided by magnetic fields that allow the researchers to precisely steer it into position. Ophthalmologists could inject the micro-device with a syringe, steer it into the correct position using magnetic fields and microscopically measure the fluorescence through the pupil. As the robot is magnetically attracted to the syringe, physicians can easily remove it the same way they introduced it.
(Source: IEEE Explore)