Skyrim talk:Night Eye (power)
Easy mod fix for Werewolf nighteyeEdit
Simply change (using xEdit aka SSEedit) the record WerewolfNightEye to be an Ability (becomes innate and constant to the Werewolf race) instead of a Lesser Power. That record is found in Skyrim.esm, under Spell. You can also alter the duration while you are making such a mod.
PS : if you are using ENBseries, you must turn on the option called Apply Game Color Correction (in the section ENBeffect.fx, below Nighteye Balance). Note ENB "mods/presets" for Skyrim recommend this option be off most of the times, except when using Nighteye. Another simpler method is to temporarily turn off your ENB when you use Nighteye.