Elizabeth Armstrong Moore writing for GigaOm:

An eye doctor says he’s recently seen a few 35-year-old patients whose lenses, which are typically clear all the way up until around age 40, are so cloudy they resemble 75-year-olds’. A sleep doctor says kids as young as toddlers are suffering from chronic insomnia, which in turn affects their behavior and performance at school and daycare. A scientist finds that women who work night shifts are twice as likely to develop breast cancer than those who sleep at night.

Starts to bring a different meaning to the term ‘retina display’.
Joking aside, I’m a huge advocate for f.lux. f.lux is a free utility for Mac, Windows, Linux and iOS (jailbroken only though) that adjusts your display according to your environment and lighting conditions to adjust for blue light. It’s also backed by a truckload of research. I have it installed across all my devices (with the exception of iOS – I never really liked jailbreaking). Blue light is another reason why I switched to reading a Kindle before bed and not playing around on an iThing.
f.lux’s preferences are easy to set. So easy, in fact, that you can just ‘set it and forget it’. You don’t have to wait until sunset to see how it works, though. You can invoke f.lux’s adjustments at any time from a little icon in the menu bar.
If you’re concerned about how blue light from screens at night might be affecting the sleep patterns of yourself or your children – check out http://www.justgetflux.com.