I have started working on an eye rendering method inspired by the one presented in this paper. As you can see on the next screen-shots, I have some interesting first results. The characteristics of the eye is taken from biologists reports papers. The iris is rendering using the subsurface texture mapping method simulating single scattering in participating medium (in this case, the iris). The light refraction at the cornea is taken into account in a different way than what is done in the eye paper (their refraction function). The sclera (the white part) is currently not shaded.
I hope you like it!
Blue iris rendering with refraction.
(click on the picture for higher resolution)
(click on the picture for higher resolution)
Green and Brown eyes.
I have set-up the scattering/extinction parameters rapidly so you may not found the color of this eyes really "realistic"! I still have to improve the current algorithm and I have some interesting idea for that.
