An eye for an eye, a tooth for a tooth

To teach someone a lesson

To have someone's eyes light up; To have someone's eyes turn red

A thorn in your side

While you still live

A painful sight

Birds of a feather flock together

The eyes are windows to the soul

Close to finished

Something that nobody needs to see

To ignore

machine-knitted fabric

To doubt your own eyes

To captivate someone

To shield your eyes

To favor someone

To scout the area

To have your eyes wide in shock

To be completely flustered

To avert your gaze; To turn away

To fix your gaze upon something

To ignore, To turn a blind eye to

To do something behind someone's back

To keep an eye on someone

To draw someone's attention