The download include 16 eyeballs with a 100 percent procedural based material (No textures) The shader scales with the eyeball object, have great depth and natural reflection. Reflection channel can be turned off in the material setup for faster rendering. Eyeball has a direction-object for easy adjusting of eye-movement.
The shader is close to perfect with a very accurate iris and pupil edge, and can stand extreme closeup and still look natural (se close-up previews).As this material is 100 percent procedural, adjusting colors, iris and pupil size is a breeze. Each iris/pupil has 3 materials (outer, mid and inner iris) which can be combined in colors - making crossovers from blue eyes to red eyes (2 to 3 colored iris). In addition, the iris marbling has individual colors too. The possibilities are almost endless.
The eyeball is capsulated inside a specular-object, just a little larger than the eyeball, and controls the specular effect. | 
)
)
)
)
)
)
)
)
)
)
