Fun fact! Cephalopods (such as octopi) have eyes with better “cable management” than our eyes do, which means they don’t have a blind spot like we do. The blind spot is because theres a gap in the retina for the optic nerve to pass through, because the retina is wired in from the front, whereas cephalopods optic nerve connects to the retina from the front.

What’s really cool is that this happened because of convergent evolution: this rough eye structure evolved independently (at least) twice. It’s like two people who have never interacted publishing a new algorithm at the same time, from different parts of the world, except one person’s is slightly more optimised. It makes me appreciate the complexity of our eyes a bit more, if it’s so good that multiple evolutionary paths converged on this design