"visible light communication (VLC) LED-based lamp to send a message to the human brain using the eye retina as a relay node. In fact, the eye and the brain can be seen as a natural VLC receiver"
The Internet of Bio-Nano Things (IoBNT) represents a transformative convergence of computer science, communication, nanotechnology, bioengineering, and medical science IEEE-ITU July 6, 2024
Shining Light On Molecular Communication: Designing a Light-based Communication System with a Biomolecular Receiver - University of Wisconsin-Madison 2020