yellowtamarin wrote:
MirrorWars wrote:
Would you still be able to see the image if you had on eye closed, do you think?
Definitely not, they require binocular vision.
Yep. The reason you can see a 3-D image in a Magic Eye picture (part of the image seems to "float" above the rest, usually) is that you can diverge or converge your eyes more than you would if you focused on the page. Instead of each eye getting the same image, they get slightly different images that can be interpreted as different views of a three-dimensional object, and so your brain interprets it as three-dimensional. It's the same principle as 3-D glasses, except that with the glasses, the difference between the two eyes is produced by blocking some of the light coming into each eye, so that two slightly different viewpoints are available. Don't bother yourself about it if you can't control your eyes well enough to focus them on a spot beyond the page and see the illusion--it's not like it's a fundamental aspect of anybody's existence, right? Well, perhaps a fundamental part of the guy who made a fortune selling Magic Eye books, but other than that, probably not.