blink of an eye

an eye for an eye, a tooth for a tooth

compensation for injury caused by a person, in the form of inflicting of an identical injury on that person.

apple of someone's eye

The object of somebody's affections; a person (or sometimes a thing) that someone strongly prefers; a favorite, a loved one.

blink first

To be the first party in some situation to give in or back down.

camel through the eye of a needle

Hyperbole to illustrate something that is impossible to do or to make happen.

catch someone's eye

To capture someone's attention.

catch the eye

To attract the attention

close one eye

to look the other way, to deliberately ignore or overlook (a mistake or transgression).

dry eye

An eye which is not crying, i.e. someone emotionally unmoved.