I had a b-scan of my eyes. Checkout the image of that scan. The optic nerve is the wavey line towards the top of the image.

There is a lot of scarring in my eyes so not much else is visible. The doctor doing the ultra sound had a lot of difficulty in finding the optic nerve. She had to press the probe down hard and that got a tad uncomfortable. My eye has been described as a disorganized globe. It is very difficult to determine the exact structures inside my eyes. You can try and sdee whether you can analyze the shapes of these structures.