What this does is it protects your eyes from harmful blue lights for long - time use. (androidheadlines.com)
They are lightweight, have yellow tinted lenses and as stated before, are designed to block harmful blue light emitted from computer monitors, televisions, cell phones and other mobile devices. (thatvideogameblog.com)
If understood the second study, they noted no significant difference between using a kindle or a tablet in terms of how much harmful blue light is emitted. (goodereader.com)