Eye Care for You                          

Dr. Roberta Horwitz, O.D.

416 Hastings Street, Pittsburgh, PA  15206

412-361-EYES (3937)

Blue Light Causes Health-Related Issues

  • f.lux  (https://justgetflux.com) [Free for Windows, Mac and Linux (and "jailbroken" iPhone/iPad)]
    • f.lux makes your computer screen look like the room you're in, all the time. When the sun sets, it makes your computer look like your indoor lights. In the morning, it makes things look like sunlight again.  Tell f.lux what kind of lighting you have, and where you live. Then forget about it. f.lux will do the rest, automatically.
  • ​​Twilight (https://play.google.com/store/apps/details?id=com.urbandroid.lux)[Free for Android]
    The Twilight app makes your device screen adapt to the time of the day. It filters the flux of blue light emitted by your phone or tablet after sunset and protects your eyes with a soft and pleasant red filter. The filter intensity is smoothly adjusted to the sun cycle based on your local sunset and sunrise times.

  • Android: Additional apps (that we have not yet tried) are available from the Google App Store by searching "blue light filter"
  • iOS (iPhone/iPad):  iOS version 9.3 (available as of March, 2016) will include, among its new features, Night Shift, a display setting that allows your iPad or iPhone to sense the ambient light and adjust its colors naturally.  Apple believes this setting will be particularly useful for those who read their device or watch video before going to bed, as the Night Shift screens will cut out much of the blue light that has been shown to interrupt sleep patterns. For versions earlier than iOS 9.3 there are several options/work-arounds available to iOS users:
  • MAC OS has ​Night Shift. 
  • ​Windows 10 has Night light settings​.  Go to the Settings screen.  Then go to the System settings, and then to Display.  Look for Color and then Turn ON Night Light Settings.  Underneath that, click on Night Light Settings.  Schedule it to turn on from Sunset to sunrise (after you have set your machine's location).  Finally, move the color temperature at night to somewhere in the red zone on the left - based upon your comfort level.

Software Solutions 

Informational Articles