Cateye

The  is an consumable item in Fallout: New Vegas.

Characteristics
When consumed, the Courier's vision is enhanced via a blue tint in dark places.

Locations
Cat eye can be purchased from the Doctor in Novac. A Jar can be found next to a skeletal corpse at the Goodsprings cave. It can also be scavenged through out the game. Most vendors sell it too.

Seems to mimic the night-eye spell from Oblivion, another Bethesda game. The name is most likely a reference to the khajit race in Oblivion which was a cat like race that had this ability.