Princeton Scientists 3D Printing LEDs Into Contact Lenses

In the future, people with certain vision disorders and even healthy eyed folks will have access to electronic contact lenses that can improve and augment native vision. There are already advancements in that direction, but the challenge of being able to embed tiny electronic components into such a small space may be the biggest hurdle. Now researchers at Princeton University have reported in journal Nano Letters the ability to use 3D printing to produce multi-color LEDs on contact lenses.