Microrobot swims through eyes to deliver drugs

Is that a speck in your eye? Or just a microrobot helping preserve your vision? Researchers are working on tiny machines that can be directed through eyes to help treat conditions like macular degeneration, which can impair vision. Scientists at the Swiss-based Institute of Robotics and Intelligent Systems (IRIS) led by Bradley Nelson are developing tiny, electromagnetically controlled microrobots that can move to a target location in the eye and remain there for months, releasing drugs. The therapy is seen as an alternative to multiple eye injections to treat macular degeneration, which can lead to legal blindness.