Stereoscopic Vision Clinical Trial
Humans attain binocular vision from the two retinal images of both eyes through a series of
sensory and motor processes that culminate in the perception of stereoscopic depth. Looking
at a scene creates two slightly different images on the retinas which is due to the eyes'
different positions on the head. This so called binocular disparity provides information to
calculate depth and therefore enables stereopsis. Physiologically the two retinal images are
superimposed and merge into one stereoscopic image.
If one image is presented to one eye in an experimental setting, and a completely different
image is presented to the other eye, the investigators visual system, analogous to diplopic
vision, is not able to fuse these image stimuli. Instead, a phenomenon called binocular
rivalry occurs. Here, both images are seen alternating and the brain can switch back and
forth between these images.
The aim of the present study is to investigate the effects of objective changes to image
quality on the investigators subjective stereoscopic perception. This psychophysiological
testing is done by looking at different images and thereafter by subjective grading of the
image quality.
The investigators hypothesize that overlapping image modifications occurring in both eyes
are detected immediately, but changes, that are rotated by 90 degrees against each other,
should be suppressed and result in one stereoscopic image, reduced in image quality. Whether
this also accounts for more detailed images, such as reading cards, is questionable.
n/a
Observational Model: Cohort, Time Perspective: Prospective
| Status | Clinical Trial | Phase | |
|---|---|---|---|
| Completed |
NCT02361463 -
2D Versus 3D Laparoscopic Training on a Virtual Reality Simulator
|
N/A |