Your blind spot is the area in the retina where nerve fibres join the optic nerve. It does not contain light-sensitive cells, rods and cones, and is therefore 'blind'. To find the blind spot in your eye, close your right eye and stare at the cross below. Slowly move towards the image, staring at the cross all the time. Where it is about 20cm or 8in away, the dot will suddenly vanish. The image is now falling on the blind spot on your retina.