The beauty is in the eye of the beholder

Example

He has something special. The beauty is in the eye of the beholder.

Don't strain your eyes

Example

Don't strain your eyes, you've been staring at your computer screen all day long and your eyes are beginning to hurt

To have one's eye on

Example

I had an eye on that house, eventually I managed to bargain a good deal

To have half an eye on - keep tabs on sb

Example

At the park I recommend you even if you are reading keep tabs on children

Done in a blink of an eye

Example

Smugglers outflanked custom controls in a blink of an eye

Give someone the evil eye

Example

I listened to a young atheist complaining that when he was out sharing his beliefs people would give him the evil eye

Do not turn an hair - without batting an eyelid

Example

The gypsy children often they would be seen with little ones, climbing over , and under their bodies, and the horses would not move a foot, or turn an hair

Eyeball to eyeball - face off

Example

I'd rather solve the problem face to face

To have eyes in the back of one's head

Example

He seems absent but my boss has eyes in the back of his head

Cast an eye over

Example

Zara cast an eye over the report for inaccuracies

Bird's-eye view

Example

A flight with a glider gives a stunning bird's-eye view

A bird in the hand is worth two in the bush

Example

You should accept that job. A bird in the hand is worth two in the bush

Hit the bull's eye

Example

If you want to hit the bull's eye with your innovative discovery, you have disclose it to the media of science

An iron fist in a velvet glove

Example

An iron fist in a velvet glove may portray an image of fierce dictator

To bare one's heart

Example

We know each very well. I certainly would bare my heart to her