I can certainly see what is meant by the comments about the pyro work. It is busy, but for me the fractalisation of the lines as they grow outward manage to fill the space evenly and equally so it does not become to heavy on the eye.
I don't even think the central area is over worked, you've delineated the space and pyro with groves.
What I will say though, is I'm glad you did not colour it, I'm almost seeing an eyeball looking at me.