A new, very small study suggests that people can shrink the blind spot in their eye by doing certain training exercises.
In the human eye, the blind spot is where the visual field corresponds with an area in the retina that has no receptors for light. Researchers studied 10 people, and over the course of 20 days had them take part in a "direction-discrimination" task. An image of a ring was centered in the blind spot of one eye, and the participants had to say which way waves of dark and light bands were moving through the ring. After some manipulation of the image by researchers, the study subjects were able to better detect the images in their blind spot, shrinking it by 10 percent.
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