This is an eyeball I created, using Kent Trammell's tutorial as a starting point. The shader is configurable for color and noise variation and works in both Eevee and Cycles. I also added a control for pupil dilation and constriction, using a riggable object property on the eye.
Impressive, with a capital eye!
One eye, 4 N's
Nice Neat Node Network
That looks incredible! Thanks for sharing your nodes as well.
Thanks!