With the visual reference gone, I lost my sense of orientation.

That was important, and extremely difficult to do in the darkness without a visual reference.

Rick made a visual reference to his father, who had turned at Daisy's approach.

The video to this song makes many visual references to America.

There are other visual references to paintings in the film.

Because the turn was made towards the sea at night, no visual references were available.

His jacket is a clear visual reference to the album.

Thus miniatures were no longer required for game play, although some players continued to use them as a visual reference.

A breeze can be heard, but no visual reference is shown.

In the darker part of the film, sound transitions to the next scene without a visual reference where it is taking place.