"The human eye is one of the central features of individual appearance," the researchers explain in the video above. "However, so far it's appearance has only been approximated in computer graphics." The new method proposes a novel way to capture all the visible parts of the eye, similarly to how games capture faces for game models today.

This new method is so accurate the iris of a digital character can automatically expand and contract depending on the lighting conditions in an environment, just like a real eye. The researchers say this will be especially useful in creating digital doubles of actors, as Call of Duty: Advanced Warfare recently did with Kevin Spacey, for example.