I think this is a great thread to discuss about whether blue light causes damage to eyes and skins. I also have the same scruple about damage from blue light emitting from LED monitors of computer, tablets, smartphones, etc. because i am working at an internet company and have to sit in front of the computer nearly 12 hrs per day. So i am quite concerned about the negative effect of blue light. i am even considering exchanging my job here.
One day, i happen to know a survey which claimed to have a proof on how blue light does harm to eyes. The below picture shows the truth.
In addition, this is an explain from Wikipedia (http://en.wikipedia.org/wiki/High-energy_visible_light). It said that HEV light whose wave length is from 400 -500 nm will bring great harm to our eyes. Just as was said, HEV light has been implicated as a cause of age-related macular degeneration.
Personally, i think long period exposure to computer, iPhone and iPad, eye strain becomes more and more serious for me. One of my workmate even has eye disease and can't help outflowing tears after a day's work.
After a lot of search, i found several tips to protect our eyes from the blue light harm. Hope i am of help.
Eat for good vision, at the same time, quit smoking.
Studies have shown that nutrients such as omega-3 fatty acids, lutein, zinc, and vitamins C and E may help ward off age-related vision problems such as macular degeneration and cataracts. Regularly eating these foods can help lead to good eye health:
Green, leafy vegetables such as spinach, kale, and collards
Salmon, tuna, and other oily fish
Eggs, nuts, beans, and other non-meat protein sources
Oranges and other citrus fruits or juices
Wear sunglasses for good vision. Use safety eyewear at Home, at Work, and While Playing Sports
It is said that some specially designed sunglasses like Compute Eyewear has the ability to filter blue light. Also, some Apps like Bluelight Filter https://play.google.com/store/apps/details?id=jp.ne.hardyinfinity.bluelightfilter.free is claimed to filter blue light emitting from LED screens.
Taime Computer Eyewear http://www.halovis.com what i am wearing now,you can also have a try if needed.
Look away from the computer, smartphones, Tablets, kindle, iPod,etc. every 40-50 minutes. You can download an app to remind you the time to free eyes from computer. EyeFoo is an example to make timed period to relax your eyes.