These eyes are amazing but aren't real - who would I ask to make something like this?

I suggest you browse the Eyes category under the Genetics section of this Custom Content finds blog, it's the best blog to find what you're looking for, the blog owner reblogs every CC that is posted in the community. Everything is correctly tagged and categorized to make the search easier. Her blog's super handy and it saves a lot of time that would be wasted looking for specific CC. I hope you'll find the eyes that you are looking for.
https://sssvitlans.tumblr.com/genetics