Posthuman Blues

I had my eyes checked today because I'm picking up a new pair of glasses. Instead of dilating my eyes the optometrist's assistant used a digital camera to take full-color pictures of the inside of my eyeballs. This involved staring into a device that flashed about as brightly as a nuclear explosion. But the photos were worth it: my eyeballs' interiors look uncannily like the cracked surface of Jupiter's moon Europa (blood vessels and nerves substituted for Europa's icy fractures).