But… Why?
There are several scientifical ways of explaining why some people can’t see the hidden 3D image in an autostereogram. Binocular stereopsis and optic axes are very important in the study of strabism, and this condition can prevent you from enjoying a Magic Eye picture to its fullest.
Other eye-related problems, such as cataracts, can also prevent you from seeing the hidden image in a stereogram. But in most cases, the people who miss the hidden 3D image are simply looking at the pictures the wrong way… But what exactly are they missing?