Blue light filter has a very short wavelength, and so produces a higher amount of energy. Studies suggest that, over time, exposure to the blue end of the light spectrum could cause serious long-term damage to your eyes. Wavelengths are measured in nanometers (nm).
Now,
How it works?
Physical bluelight filters works by providing constant protection from blue light by giving an orange tinge on your mobile screen.
Now, comes to softwares came u can apply any time...
So, it implies that we can apply blue light filter on electronic devices for 24x7.
