Yes this is the result of a so called "Base Color Blend Map" in the Digital_Human shader used as a poor attempt to simulate Ambient Occlusion.
I believe this should be fixed in CC 3.3 with the new Base and AO feature.
Meanwhile you can get rid of it, or lower its influence if you select the eyes, then go to the Material tab, select either Std_Cornea_R or _L then scroll down to the Shader Settings section then Textures sub-section. You will see the reddish "Base Color Blend Map".
You can remove it completely or embed it and adjust its color to raise the Brightness and lower the Saturation.
Hope this helps.
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guy rabiller | GOETZIWOOD STUDIOS
"N.O.E." (Nations Of Earth) Sci-Fi TV Show, Showrunner.
Edited
5 Years Ago by
GOETZIWOOD STUDIOS