The natural protective functions within the eye have been the model for our PRO filter:
At the spot of most acute vision, the macula lutea (or yellow spot), the pigments lutein and zeaxanthin shield the retina cells from agressive short-wave radiation, which causes cell damage through free radical formation. Although this natural protection mostly filters out light in the violet and blue range, filtering properties can be observed even in the blue-green wavelengths up to 550 nm.
The bluelightprotect PRO filter optimally protects agains short-wave radiation (blue light), by filtering out 99% of light below 500nm, and in addition filters out about 80% of the light in the blue-green range (500-550nm)
This is why we recommend the PRO filter or anyone who´s eyes are predisposed or already show a medical condition, when you spend long hours working on monitors or in a blue light environment (LED light or flourescent light), and especially in the evening, when blue light is particularly disruptive to the circadian rythm.