Blue Light Toxicity
Blue and violet light (400-490um) is found in the left part of the visible light spectrum, and sits right next to the UV part of the light spectrum. We take it as a given that excessive UV light is damaging, and this fact is reinforced every time we get a sunburn. If UV can literally burn the skin, it is not much of a reach to believe that the Blue-Violet light part of the spectrum which sits next to the UV light spectrum could also be damaging.
There is little disagreement in the clinical research. If you grow retinal cells (located at the back of the eye) or corneal cells (located at the front of the eye) in a petri dish and expose them to red, yellow, or green light, little or no cell death occurs. When they are exposed to Blue-Violet light, they die.
There is little disagreement in the clinical research. If you grow retinal cells (located at the back of the eye) or corneal cells (located at the front of the eye) in a petri dish and expose them to red, yellow, or green light, little or no cell death occurs. When they are exposed to Blue-Violet light, they die.