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To demonstrate the existence of blind spot.
Draw a thick broken blue line and a red circle on a white sheet of paper. The distance
between the line and circle may be adjusted to be about 6-8 cm.
Hold the sheet of paper at an arm's length from the eye. Close your right eye. Look at
the red circle and slowly move your head closer to the image. What do you observe?At a certain distance the blue line will not look broken. This happens when the image
of this 'broken line' falls on the blind spot of the retina. The brain fills up the 'missing
information' and we see the broken line as a complete unbroken line.
You can even draw the following figure on a white sheet of paper. Observe at whatdistance the 'space', between the vertical lines, 'vanishes'. Now close your left eye instead of right eye. Repeat the above steps. What do we conclude?
The blind spot position varies for the left eye and the right eye. For both theblind spot is not exactly in the same place.
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Answer:Blind spot is the place in our eye where no light reaches and no image is formed there.
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