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In order to see 3D and with stereo depth perception your brain has to use the visual information from both eyes. If the two eye views are too different and cannot be matched up, the brain will be forced to make a choice. It will reject all or part of the information from one eye. The brain can ignore, suppress or turn off visual information it cannot use.

The Framing Game can tell you whether both your eyes are TURNED ON at the same time (binocular vision). The illustration to the left demonstrates what should happen.

  • Center your nose over the brown eye (iris) below.
  • Focus your eyes on the single brown eye.
  • Put your free thumb in front of your nose.
  • Continue to focus on the eye. If both eyes are on, you will see two thumbs framing one eye.
  • Now, switch your focus to your thumb. You should see two solid clear eyes framing one thumb.


    Both your eyes are ON and you are an excellent candidate for 3D viewing fun. Continue with this guide and enjoy!

  • Follow the instructions again and pay close attention to where you're focusing your eyes.
  • If you wear lenses, try it without them.
  • Can't see two thumbs (or two eyes)? Or do you see two thumbs, but one thumb is blurrier, higher or lower than the other? Does one thumb of the two thumbs disappear and reappear? Or does one thumb appear faint -- like a ghost image? Any one of these signs could be an indicate that you might have a vision problem or a problem with depth perception.

    You may want to consider having a comprehensive eye examination which includes the testing of binocular vision. To locate an expert eye doctor who tests depth perception in your area, consult the Directory of Eye Doctors - Optometrists
  • Don't give up. You don't have to have perfect binocular vision to attempt 3D viewing. Viewing the 3D images at this site can reinforce and strengthen your binocular skills. Learn about how eye doctors use 3D images to improve vision.

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Magic Eye How to See 3D copyright © 1995; Out-of-Print
by Magic Eye, Inc. and Rachel Cooper, Advocate of Vision Therapy Eye Exercises for Lazy Eye.
All other images and text: copyright © 1996- by Rachel Cooper. All rights reserved.