Each of eyes contains an area that has no photoreceptors because it is occupied by the optic nerve. This area is known blind spot. These areas are on opposite sides of visual field. Following exercise is isolate the blind spot.
Cover/close your left eye and look at the black cross (on the left). Move slowly towards the screen. The black dot disappears!
Cover/close your right eye and look at the black dot (on the right). Move slowly towards the screen. The black cross disappears!
Follow the movement of the pink dot for few complete rotations and then
look at the black cross in the middle. You will notice a green dot that will
erase all pink dots from the image.
Look at this woman for about one minute then look at the empty screen. Well I hope you can feel the picture of a beautiful women.