Horus

"Experiment: Eye Dominance

Materials:
index card with a small hole in the center

Background for Instructors:
Right / left dominance is the tendency to favor one side of the body over the other. People generally have a dominant eye, meaning the brain chooses between images perceived by the right eye and the left eye. If neither eye is dominant, the image jumps from one eye to the other. There is no accepted correlation between hand dominance and eye dominance.

Procedure:
Hold an index card with a small hole in the center at arm's length. Look through the hole with both eyes at a distant object. Close one eye, then the other. The eye that keeps the object centered in the hole is the dominant eye."