Her eyes were large and dark, the pupils dilated by the drugs she had been given.

The other took a deep breath, and the pupils of his eyes dilated.

Pupils dilate when they are interested in the other person.

Her eyes, pupils dilated all the way, were reflecting light back at him.

Wasn't there some study about how when a woman looked at a man and found him attractive, her pupils dilated?

His pupils dilated so he could see better in dim light.

In dark light the pupil can dilate and fill up almost the entire eye.

I asked him, and his eyes fixed on my face, pupils dilating.

Her eyes were wild, the pupils dilated with excitement and fear.

As his pupils dilated he saw scattered men running for cover, and three lying still on the ground.