The sly glance. The unmistakable come-hither look. The blatently erotic, deliciously hungry gaze. It's something we've all seen-or done-eye sex.
On the written page, it sometimes takes us writers a bit of time to describe that particular gaze. Though when we write that line, and use the just-right turn of phrase, our words evoke our readers' imaginations. Just the visual we wanted to. It's become stronger because of our favorite actors and actresses.
When we describe a specific look, often the reader pictures a look they saw in a television show or movie. We writers have learned to use that-the fact that our audience have already been exposed to so many visual stimulations. Something Jane Austen could never have done in her time.
Lucky for us, we don't have her constraints and can indulge in as much eye sex as we wish!