"Blue light from smartphones might be interfering with your sleep, but there’s no evidence that it’s blinding you, despite ad claims and, occasionally, headlines implying it is."

"The American Academy of Ophthalmology spelled it out recently: No, Blue Light From Your Smartphone Is Not Blinding You. That was in response to a study published this summer that found blue light, plus a chemical naturally found in certain eye cells, could damage cells. The catch: researchers did not use any actual cells from our eyes, because our eyes have defenses against exactly this sort of damage. (They were studying a question unrelated to eye health; the Verge has more on the purpose and meaning of the experiment.) "