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.
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.