No idea, unless the texture already has separate left/right eyes.

I know that's how we did it back in the early(ish) OB days - my own had sectoral het on one and blind on the other - but I think that might have been with redone eye mesh/uvmaps that supported separate right/left textures, as this was after Ren's came out and everybody went face/head/eye/hair crazy.

Maybe if I look into how it was done in OB, I might be able to figure it out for Fallout. Let me know if you have any advice.

Long time since I updated. Still compiling a list of new additions. Anyone with suggestions feel free.

Interesting. I myself have central heterochromia. The outer part of my iris is a light greenish brown whereas the central part is a medium brown.

Is anyone aware if there is anything that would prevent me from using these eyes on Super Mutants? By this I mean, if I opened up the GECK and say, gave a Super Mutant one of these sets of eyes. I know that eyes are interchangeable with dogs in a similar way.

How would I go about making the eye meshes separate instead?

That way you can apply a different texture to each eye.

With a big thanks to Ghogiel, I have some re-mapped eye meshes and can now make Hetrochromia eyes.
This also means restarting the project, but that's fine. It will be worth it for the new and improved textures.

Finished a large set of textures with the new eyes. just waiting to fix a problem with the child eye meshes, then I will make a release.