Four Eyes

 is a Trait which only appears in Fallout: New Vegas.

Effects
Taking this trait effectively lowers your base Perception by 1 point, when attempting to qualify for perks. Its actual effect is to raise the Perception bonus of most eyewear to +2 instead of the normal +1.

Behind the scenes
This trait's name could be a reference to the film Six-String Samurai, which is about a spectacled man named Buddy (referred to as "Four Eyes" by many of the characters) traveling through a post-apocalyptic wasteland outside of 'Lost' Vegas.