Dichoptic presentation (vision, perception): viewing a separate and independent field by each eye.

Dichoptic presentation, "invisible" and natural image contextual stimuli have also been studied.

In dichoptic presentation, stimulus A is presented to the left eye and then stimulus B is presented to the right eye.

When the test line is presented in one eye and the context in the other (dichoptic presentation), the magnitude of the tilt illusion reduces), suggesting that at least part of the effect is due to monocular cells.