hard on the eyes

all eyes

Watching alertly or attentively.

all eyes and ears

Very attentive.

babies in the eyes

The minute reflection which one sees of oneself in the eyes of another.

bat one's eyes

To signal or feign by fluttering one's eyelids, as romantic interest.

bawl one's eyes out

To cry, shed tears, weep loudly.

believe one's eyes

To believe that something which one directly sees is truly the case.

bone hard

As hard as a bone, rock hard.

clap eyes on

To see; to lay eyes on.