Some experimantal eyes. Definitely not the best ones, but I think from a certain distance they look ok. I've tried to make them behave relatively physical correct. Therefore, I referenced a real glass eye and tried to get as close as possible with the cornea shader, which should actually be wrong, cause of the low IOR. I wonder what you think about that.

The colours are extreme easy to set up. The blend contains 3 different versions to get a start, however, I strongly recommend to tone them down for realism. I've also tried to put them into sockets, seems to look all right so far.

The HDR-Background is certainly not included, I've downloadad it from openfootage.net and it's labled 'HDRI 360° Ladefense Paris, France', published under CC-By. Unfortunately I could'nt find out by whom. If someone knows, please tell me.

I hope you find it useful and please forgive me for my lousy english.