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Although it's called the white, this part of the eye isn't completely white, so it's a good idea to set the basic colour as white, and have your specular colour set to an off-white, as seen in the next image. |
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You can also see from this image how we've used the 3D Textures - Spots node to give the effect of the tiny blood vessels found in the white of the eye. I've also attached it to the Bump operator for a little more realism. |