This activity introduces the creation of afterimages formed from a prolonged stimulation of the eye’s retina. A flashlight, paper, and tape are used to produce afterimages viewed on one’s hands and a more distant wall. ...

This site contains an activity demonstrating how one's eyes influence each other and what occurs when two eyes receive conflicting information. The participant looks through a paper tube with only one eye to perform...

This activity deals with perception by demonstrating how two eyes can see the same thing very differently. A mirror is used to look at a blank wall with one eye and at a person with the other, causing parts of the face...

This site from the Exploratorium contains an activity to demonstrate fatigue of the eyes’ motion detectors and the resulting visual illusions. A spiral disk is rotated as the participant stares at it for a few seconds;...

This site from the Exploratorium provides an interesting activity for building a "two-way" mirror. Partners sit on opposite sides of the mirror and adjust the illumination until each gradually assumes aspects of the...