What do people mean by “you don’t see darkness, you see nothing” if you lose your eyeballs?

Question

I cannot fathom seeing nothing as opposed to just seeing pitch black. An example I was told is “it’s like trying to see out of your elbow”. I still do not get it

In: Biology

Answer 1

Take a finger, move it to the edge of your vision. Now, keep moving it until you can no longer see it. It’s not “black,” it’s not there. Now imagine that for everything.