Publication Date



School of Health Sciences


Biology: Biomedical Sciences


blue light, optometry, blue light lenses, retinal health, retina, ocular disease, circadian rhythm, age related macular degeneration, antioxidants


Medical Biochemistry | Ophthalmology | Optometry | Other Public Health


Light emitting diode (LED) lights that comprise television screens, phone displays, laptops, and tablets have been studied by scientists in order to understand the implications of blue light radiation and the effects that it has on the human body—especially the retina of the eye. The retina is comprised of highly metabolic cells, and when those cells are placed under oxidative stress, death occurs causing ocular disease. Additionally, excess blue light exposure causes shifts in biological rhythms that govern patterns of alertness and sleep. Recently scientists began studying the methods of blue light prevention. Some studies show that blue light radiation is not as damaging as researchers once thought, but long-term blue light exposure studies are still necessary to rule out any health concerns.