A brain organoid equipped with eye-like optic cups Elke Gabriel
A few blobs of human brain have been grown in a dish and coaxed to form rudimentary eyes. These respond to light by sending signals back to the rest of their brain tissue.
These tissues are similar to the tissue found in real eyes. They include a round lens that focuses images and a retina which senses light. Jay Gopalakrishnan, Heinrich Heine, said that the brain tissue is actually seeing light in a way.
