UPSC Civil Services Model Paper 3

● Blindspot

● The eye lens focuses light on the back of the eye, on a layer called the retina .
● The retina contains several nerve cells.
● Sensations felt by the nerve cells are then transmitted to the brain through the optic nerve.
● At the junction of the optic nerve and the retina , there are no sensory cells, so no vision is possible at that spot.
● This is called the blind spot.