By looking at the picture of the rat above, it is possible to notice your blind spot. Cover your left eye, and hold the drawing about 30 cm from your eye. While looking at the upper ‘X’. you should notice that there is a distance from your eye at which the spot disappears. On the other hand, if you look at the lower ‘X’, you should find that the rat disappears, but that the lines seem to stay. sem sagt ef að þið lokið vinstra augannu og horfið á efra “X”ið þá eigið þið að færi höfuðið á...