All light is made up of a spectrum of different colors, which correspond to different wavelengths of energy. The screens on digital devices have a higher proportion of high energy visible (HEV) blue light. The higher the energy, the more it can affect our eyes. Blue and violet light is the highest energy on the visible light spectrum. Prolonged exposure can strain and even damage our eyes.
Nowadays, most of us spend many hours a day sitting in front of a modern TV, computer screen, tablet, or smartphone. The light from the screen of these digital devices has adverse effects on our retina, and the long-term effects are still unknown. If you spend hours a day in front of a screen, sooner or later, you are likely to feel discomfort in your eyes including soreness, fatigue, and blurriness.