I'm not quite sure, how you define "the perfect eye", but in case you want to achieve realistic results, I don't think you will get the best results if you try use procedural tools. You may experiment with Distort-Filters like "Waves" to get something that wiggle, and use Layer Masks to first render the line nova as it is and then make it a circle, but i doubt that this will ever look natural.
It will be far easier to simply paint the iris. Just look for a good brush set like this iris part brush set and use them to produce very good results.
Have fun!
Micha
It will be far easier to simply paint the iris. Just look for a good brush set like this iris part brush set and use them to produce very good results.
Have fun!
Micha