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Slide 2

Find your blind spots

Figure 1. Fixate your eyes on the black square with your face about 20 cm (8 inches) from the screen. When you close your right eye, the left spot should disappear, while when you close your left eye, the right spot will disappear. You may have to move your head forward and back a bit to find your blind spot. Note that the fill-in area is yellow - since the surround of the blind spot is yellow. That is the visual system's best guess as to what should be there!