Why do football players wear those painted lines under their eyes?

Have you ever wondered why these handsome football player wear those painted lines under their eyes?

• In the 1920's they used certified crazies to play football, and they were given those lines at the nuthouse so if they escaped, people would know they were crazy. Today, it's just done for tradition.

It refracts light away from the pupil on sunny days to help reduce glare and sun blindness, it also helps in the prevention of other players being able to read players eyes for directions of plays or following of motion men, hence the "EYE BLACK"

Football players have black lines painted under their eyesto protect their eyes from the sun when playing indaylight and to protect the eyes from bright lights whenplaying at night.