Nighteye pills? I love Nighteye from TES. Anyway, there is no point in wasting caps or perks. Just turn your brightness up. Makes the game look better too.
I tried doing that, but it makes daylight unnaturally bright and washed out, even for a desert wasteland. Fortunately, I have a night-vision scope for my varmint rifle now, so it's not too much of an issue. It's just the principle of the matter that bugs me, or I wouldn't be shamelessly bumping this post back up...