The Magic Eye

Parallel Method

Parallelism is one method of viewing stereopsis.

When you look at a nearby stereoscopic view while focusing on a distant object, hidden letters will appear in 3D.

The trick is to view stereoscopic images as if you were looking into the distance.

Intersection method

The cross method is one of the methods of viewing stereoscopic images.

When you view stereoscopic images with your eyes focused closer than in stereo vision, hidden letters will appear in 3D.

The trick is to view stereoscopic images as if you were looking at a close object and leaning in.