  Preattentive visual features such as hue or flickering can effectively draw
attention to an object of interest -- for instance, an important feature in a
scientific visualization. These features appear to pop out and can be
recognized by our visual system, independently from the number of distractors.
Most cues do not take advantage of the fact that most humans have two eyes. In
cases where binocular vision is applied, it is almost exclusively used to
convey depth by exposing stereo pairs. We present Deadeye, a novel preattentive
visualization technique based on presenting different stimuli to each eye. The
target object is rendered for one eye only and is instantly detected by our
visual system. In contrast to existing cues, Deadeye does not modify any visual
properties of the target and, thus, is particularly suited for visualization
applications. Our evaluation confirms that Deadeye is indeed perceived
preattentively. We also explore a conjunction search based on our technique and
show that, in contrast to 3D depth, the task cannot be processed in parallel.
