Eyesafe laptop covers blocks UV and high-energy visible (HEV) blue light RPF30. Screen sizes work for various types of computers and measures to fit the screen size. Blue light, another name for high-energy visible (HEV) light in the blue and violet part of the spectrum, is a particularly intense light wave emitted by many modern electronics, including smartphones and computers. Long term implications are now being studied and the short-term impact of digital eye strain affects people on a daily basis. Eyesafe screen covers are available in levels of coverage RPF30. Learn more about Retina Protection Factor or RPF.