an image we see with depth using a stereoscope with 2 similar images in it. However, a stereoscope is usually used to view the images. Some of the observers may fuse 2 object images by crossing their eyes.

STEREOGRAM: "A stereogram is what we see using a stereoscope but some people can see it by crossing their eyes."
Cite this page: N., Pam M.S., "STEREOGRAM," in, April 13, 2013, (accessed January 14, 2021).