Building a bionic eye | EJ Chichilnisky

We take this for granted, but our eyes are amazing.

They're incredible. We process the visual world so automatically and so instantaneously, we forget how much work our eyes and our brains are doing behind the scenes, taking in light through the eyeball, transforming light into electrical signals in the retina, packaging up all that information, and sending it on to the brain, and then making sense of what it is we're seeing and responding to it.

In fact, new science is showing that the eye itself, meaning the retina, is actually doing quite a bit of the fancy image processing that scientists used to think was happening deeper in the brain. 

Of course, our eyes are not perfect. Millions of people suffer vision loss or even blindness. Often, this is because the tiny cells in the retina that process light die off for one reason or another, but here's something that may surprise you. While it sounds like science fiction, the possibility of engineering and artificial retina, a bionic eye, is closer than you might think, and that brings us to today's guest 

EJ Chichilnisky is the John R Adler professor of neurosurgery and a professor of opthalmology here at Stanford, where he leads the Stanford Artificial Retina Project. His team is engineering an electronic implant to restore vision to people blinded by incurable retinal disease. In other words, they are prototyping a bionic eye.

Links

• Stanford Artificial Retina Project
• Chichilnisky Lab

Further Reading

• Using machine learning to identify individual variations in the primate retina (Stanford Neurosurgery)
• New ways to prevent — or even reverse — dementia, paralysis and blindness (Stanford Medicine)
• An artificial retina that could help restore sight to the blind (Stanford Engineering)
• Researchers want to heal the brain. Should they enhance it as well? (Stanford News)
• Another retinal implant project at Stanford: Implanted chip, natural eyesight coordinate vision in study of macular degeneration patients

Episode Credits
This episode was produced by Michael Osborne, with production assistance by Morgan Honaker and Christian Haigis, and hosted by Nicholas Weiler. Cover art by Aimee Garza.

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