Procedural customizable eyes. Model for a pair of eyes, using procedural shaders to customize the look to a wide range of possibilities. Also includes a separate single eye model.

Customizable features include:

• Iris color (primary)
• Iris color (secondary)
• Vein thickness
• Vein color
• Vein amoun
• Sclera (white part) color
• Iris detailing scale
• Iris normal amount

Many looks can be achieved using these features. Regular, bloodshot, pink-eye, infected, demonic, glowing iris, etc.

The rig includes:

• Master target
• Individual eye targets
• Master pupil dilation controller
• Individual pupil dilation controllers
• Root bone to control eye position

Using these controls the eyes can be easily animated to look at any position, as well as dilate or shrink the pupils as they react to light/mood, creating a more realistic look.
This is an asset you can append to any scene using Cycles.