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Did you know that there is a spot in the eye that cannot see anything at all? It's called the optic disc, and it's the point where ganglion cell axons exit the eye to form the optic nerve. Now you can find your own blind spot with BlindSpot for your iPhone or iPod Touch.

Hold your iPhone a few inches away from your face, close your left eye, and focus your right eye as directed. If you do it properly, you will be amazed to see the moving dot DISAPPEAR as it passes in and out of your blind spot! It's a neat trick that you have to witness to believe.

If you don't see it right away, don't feel bad. Sometimes it just takes a little patience. Move the device closer or farther away and try again.

Once you get the hang of it, show it to your friends. It will blow their minds!

Go ahead. Find your spot.


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