PCVisionBonus script functions
Fairly obscure script function apparently, but I know at least one mod that uses it. That and another upload whjich seems to be the same file in a different page (The readme doesn't list any version differences and the filesize of the esp is the same, at least).
It's listed in UESP without any details (Other than it being undocumented) so I made a quick test in the original engine. It seems to be Night Eye sans the status effect indicator.