Worlds of David Darling
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blind spot

The blind spot is a small region of the vertebrate eye that has no photoreceptors – rods or cones – because it is the place where the optic nerve connects to the retina.

blind spot test

To locate your blind spot, close your left eye and stare at the cross in this picture with your right eye. Adjust the distance of your head from the computer screen until the spot disappears. The image is now falling on the blind spot of your eye and is therefore invisible to you.

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