Your eyes consist of two light-sensitive cells: rods and cones. The rod cell helps detect red, blue, and green lights. Without the rod, cell color will not be visible. While the cone cell plays a very important role in color vision, and from birth, you were born with at most 30 million cones, and it decreases as you grow older, which is natural, but with constant exposure and direct eye contact with blue cones tends to decrease more than expected. Blue light can also cause eye disease experienced in old age.