A simple visual exercise can train attention, calm the nervous system, and ease entry into meditation. It uses an image with a repeating pattern that has a hidden 3D form, called a stereogram. To see this image, the eyes have to relax focus.
Many people met this in Magic Eye books. The same mechanism is useful in training the brain to loosen focus and look past the image. This technique is used to perceive auras and strengthen spiritual sight.
This works because depth perception is constructed. Each eye views the world from a slightly different angle. The brain compares the difference and builds depth. This process is called stereopsis. To view a stereogram, the eyes shift into a specific alignment, often described as a relaxed “look through” focus. Eye muscles hold that alignment while attention stays stable.
Zen and Daoist methods include “soft eyes” practice, a relaxed, open gaze that rests on the whole visual field. It is a way of looking where the mind is no longer reaching. You can see details if you choose, although you do not latch onto them. The edges of your vision become more noticeable. You sense space, light, movement, and depth as one field. It often comes with a drop in forehead tension, jaw tension, and neck tension.
There are also video versions of these now. (I linked a playlist here: https://youtube.com/playlist?list=PLlyUvOeq7duJEIGZWCvGw0Ikww7K7C7T-&si=9ARTwzkVPj93llnB)
Have you heard of these before? If so, did you know how it links to meditation?