In this UV spectrum (A UV spectrum is a plot of the absorbance of light on the vertical axis and the wavelength of light in nanometers (run) on the horizontal axis.) We can conclude that blue light radiation is everywhere. It is emitted naturally from the sun and the overexposure to artifical lights. The digital screens and LED lights have caused an overexposure to the human eyes. Studies have shown that this overexposure have affected to people regarding the age. The ratio and percetages have increased too quick in today's world because of this exposure.