Haploscope
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A haploscope is an optical device for presenting one image to one eye and another image to the other eye. The word derives from two Greek roots: haploieides, single and skopeo, to view. The word is of
Synotophore by Walter Green with Sharp-Crawford rotating slide holders
Binocular vision
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In visual science, binocular vision focuses on visual perception with two eyes instead of one. Two main areas are directional vision and depth perception. Both eyes can positively or negatively influe
Haploscope
…type of haploscope, but not vice versa. The word has more currency in the medical field than elsewhere, where it refers to instruments designed to test binocular vision. These instruments include Worth's amblyoscope and the synoptophore. Commonly haploscopes employ front-surfaced mirrors placed at different angles close…
The grey crowned crane, an animal that has laterally-placed eyes which can also face forward
Line stereogram
Moon stereogram. Photographs taken on September 15 and November 13, 1864, by Rutherford. View with crossed eyes
Line stereogram that can be viewed with crossed eye directions