Yes. The wikipedia says that blue light is that light with wavelengths in the 500nm to 381nm range. That is to say, UV(ultraviolet) has three sorts, UV-A, UV-B and UV-C, and generally, "near UV" refers to blue light. As we all know, UV is used as sterilization purposes in industry. Woo, it is horrible that we are always exposed to such lights that may cause skin cancers and cataracts and mutates retinal tissue. There is no doubt that most of our commercial display and industy lit with cool white fluorescent tubes, which emit a strong spike of blue light, our PC as well. Further ,we use our PC everyday. Scientists have found that once we expose to the blue light for 12 hours or more, the accumulation of some substances may make our retina more sensitive and vulnerable as the light wavelengths become shorter, especially to those who are prone to macular problems. Then our eyes can not work for life time. However, don't worry, we still have a build-in protective mechanism. So what we need to do is to get rid of strong sunshine or something like it.
