Parallel-view the stereo pairs below one at a time.
When you 3D view a stereo pair, you see three figures.
The middle figure will be the combined 3D figure.

Do you use both your eyes? Can you see the words LEFT and RIGHT
simultaneously when you 3D view the figure below. The other figures
on this page are easier, but this first one can tell you whether your binocular
vision is in good shape. For another easy test of your vision, try
The Framing Game.

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