Visual presentation of this web site requires JavaScript. Skip ahead to the main content
Eyecare
Discovery
Center

Caring for Your Eyes

  • By Age
  • By Topic
VSP Home Member's Home Eyecare Info About VSP
Español   

Experiments

Illusions

Do these circles appear to intertwine? Believe it or not, they are actually individual circles!

Illusion

ILLUSION 1 2 3 4 5 next

Move your eyes around this image and count the dots at the intersections. When you are finished, count them again. Do the dots appear and then disappear? Focus on any one dot and it will disappear.

Illusion

ILLUSION previous 1 2 3 4 5 next

Do you see a rabbit or a duck? Look closely, and you will see both.

Illusion

ILLUSION previous 1 2 3 4 5 next

If you look at the three dark rings you should be able to see particles swirling around. Stare at them long enough and they will reverse direction.

Illusion

ILLUSION previous 1 2 3 4 5 next

This one will make you dizzy.
Try focusing on just the center circle while moving your head.

Illusion

ILLUSION previous 1 2 3 4 5