The range of wavelengths of visible light is from approximately 400 nanometres (nm) to 700nm. The wavelength of UV radiation is below that of visible light, ranging from 100nm to 400 nm. Since UV radiation has more energy than visible light, it may cause damage to the ocular lens of the eye causing cataracts. Blue light may play a role in the pathophysiology of macular degeneration depending on exposure intensity and time (...)