1. A method comprising the steps of: providing a first first-eye image for display, an inverse image of the first first-eye image, a first other-eye image for display, and an inverse image of the first other-eye image; displaying the first first-eye image to a first eye during a first interval; displaying the inverse image of the first first-eye image to another eye during a second interval, the second interval being shorter than the first interval; displaying the first other-eye image to the another eye during a third interval, the third interval being the same duration as the first interval; and displaying the inverse image of the first other-eye image to the first eye during a fourth interval, the fourth interval being the same duration as the second interval.