Currently, any changes to character's eyes (e.g. Blind Left Eye, Magicka Zephyr Lashes) are listed under Facial Hair/Horns. However, you can only have one 'Facial Hair' applied at a time, so if you want to use something like 'Blind Left Eye' then you cannot use an actual facial hair appearance item, or vice versa. For obvious reasons, this is silliness; while it makes sense that you cannot have both a 'Long Knotted Beard' and 'The Hrothgar Hermit' there is zero reason you couldn't have both a 'Soul Patch' and a 'Blind Right Eye'. The easiest - and most logical - solution would be to simply make eye changes their own category.