Fifteen eye textures based on a screenshot by TairenSoul.
Like with the Oblivion version of this mod, there are two variations for each humanoid race, with race-specific variations.
If you’re using a custom race that utilises the vanilla headparts (for instance, the Ashen), these eyes will be available to that race as well.
Extract the archive into your Data folder, then activate the .esp in the Launcher. It’s pretty self-explanatory.
Delete MissAniThrope’s Soul Cairn Eyes.esp and MissAniThrope’s Soul Cairn Eyes.bsa