Does the Bluelight Filter for Eye Care app really work? Can you tell me why it is helpful to protect eyes?
Sorry to tell you that no app can really filter the blue light emitted from your digital screen. This kind of app does reduce our eye strain because it helps to change the contrast, adjust the brightness, and add some shades. Want to know whether the eye care app filters blue light effectively, you should use a spectrometer.
In this video, you can see clearly how blue light has been filtered by T’amie blue-light protection glasses with the use of a spectrometer.
In fact, most of us computer workers pay more attention to eye care from blue light and eye strain. But we should make the right choice to protect our eyes.
Hope this helped!
Bluelight filter apps do help to reduce blue light.
Assume you have a fully blue screen on your mobile. Each pixel would obviously be emitting blue light. The effect of blue light is not the effect of the waves unlike UV rays that damage cells. Its effect on human beings arise from the fact that our biological processes associated with sleep is linked by nature to an absence of blue colored objects in nature at night. Now, let us place a red opaque screen on top of the blue screen described earlier. Obviously, the eye now sees a red screen and it does not trigger any sleep hormones. A blue light filter app uses this phenomenon by using a semi-transparent non-bluish overlay that increases the reddishness and/or greenishness of the screen.
We have developed an app to reduce the bluishness of the screen. It has no ads, over 400 good reviews, and small file size (~86kb). You can try it out or just read through the reviews to understand how it is helping users.
Affiliation: Developer, Non-profit
Some useful apps can truly block blue light and offer eye protection. And I also approve the upstairs' point: blue light blocking percentage differs due to the different apps and products. Generally speaking, I enjoy the F.lux on my Android phone very much.
Besides, a blue light protective eyewear is great for eye protection, too.