What is blue light?

Light is made up of electromagnetic particles called photons that travel in waves. These wavelengths of visible and non-visible light are measured in nanometers (nm), and, in general, the shorter the wavelength, the higher the energy. Together these wavelengths make up the electromagnetic spectrum. 

The human eye perceives only the Visible Light portion of the electromagnetic spectrum, which ranges from 380nm to 700nm and is represented by the colors violet, indigo, blue, green, yellow, orange and red. Blue light, also known as high energy visible (HEV) light, has the shortest wavelength of visible light (380nm to 500nm), and therefore produces the highest amount of energy. HEV blue light produces both benefits and concerns for our eyes and overall health.


How does blue light impact the eyes?

Anterior structures of the adult human eye (the cornea and lens) are very effective at blocking UV rays from reaching the light-sensitive retina at the back of the eyeball. But HEV blue light is different, with much of it passing through the cornea and lens and reaching the retina at the back of the eye. Studies suggest that, over time, cumulative exposure to the HEV blue light could cause specific long-term damage to your eyes:

  • > Potential damage to retina cells, particularly in children and teens
  • > Long-term vision problems such as increased incidences of age-related macular degeneration (AMD)
  • > Suppressed production of the natural release of melatonin, which can lead to disrupted sleep cycles
  • > Digital eye strain, which is commonly exhibited by dry eyes, headache and blurred vision.



What is the difference between Eyesafe and software solutions for blue light management? 

Software solutions exist that impact blue light and the entire color experience from the display. We believe these are inadequate solutions that cause for disrupted interactions and visual display. These solutions may turn down the blue light but they also impact other colors in the visual display, often causing a yellow, orange or dulled color impact. These solutions are also usually set to turn on during night time hours and don’t provide protection during the day. Comparatively, Eyesafe filters HEV bands of light with more surgical precision. Eyesafe® Technology is focused on adherence to ANSI Standards for blue light management, and the filtered removal of 380nm-500nm, while maintaining beautiful visual experience and superior color.



What portions of the light spectrum does Eyesafe® Filters reduce and why?

Within the visible light spectrum, the blue light band ranges from 380nm-500nm. Eyesafe has been developed to selectively filter of the portion of the light spectrum and specifically UV light (<380nm) and high-energy visible (HEV) blue light (380-500nm). This band of light is more intense and to learn more about blue light click here.



What devices does Eyesafe provide filters for?

Eyesafe provides filters for many popular Laptops, Smartphones and Tablets. To see if we currently have a product for your device(s) click here


What if I can’t find a filter for my device?

Eyesafe is committed to protecting as many devices as possible. If you don’t see a filter designed for your device let us know and we’ll get it added to our list as soon as possible.


How do I know Eyesafe® Blue Light Screen Filters really work?

Eyesafe® Filters are designed and tested in the U.S. using industry color management standards. Additionally, our filters undergo thorough certification by TÜV Rheinland, the world’s leading certifying body for color management and blue light filtration. These certifications signify the efficacy and authenticity of our products. Our filter technology is guided by leading ophthalmologists as part of the Eyesafe® Vision Advisory Board.


How long will my filter provide Blue Light reduction?

Eyesafe® Filters are designed to reduce blue light for as long as it is installed on your device.



Once installed, are Eyesafe® Filters permanent?

No, Eyesafe® Filters are designed to remain adhered to your device for as long as you’d like. If you decide to remove the filter you can do so by carefully peeling it off starting with one of the corners.