this post was submitted on 14 Jul 2023
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Explain Like I'm Five

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Why filter blue light instead of not emitting it in the first place in a situation involving a computer display and a human observer with no other sources of blue light? (lemmy.world)
submitted 1 year ago by [email protected] to c/[email protected]
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What is the natural science reason to wear blue light eyeglasses instead of just turning one's computer display's blue lights off or very low in spaces where there are no other sources of blue light than the screen the person is watching? Suppose that the person has perfect visual acuity without eyeglasses. Suppose also that all other possible protective measures achieved by the blue light eyeglasses are achieved by other means, such as by using UV filtering eyeglasses of the same shape and frame material and frame color as the blue light eyeglasses assuming that the blue light eyeglasses do have such protection. Economic, ease of use, technical savviness, time needed to configure the display or other such reasons are out of scope of the question. Other situations where there is blue light are also out of scope just as the overall harm caused by blue light.

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[–] [email protected] 0 points 1 year ago

I'll tell some background on why I asked the original question.

I am using a setup where I have adjusted the amount of blue light emitted by my display to as low levels as I could from the interface accessible through the physical buttons in my display. My display is also set to be so dim that when some other people took a look at my display, they had a hard time seeing almost anything even at a good viewing angle.

I also have the night light feature set to as warm as possible on my Ubuntu Linux.

I can also easily control all other possible light sources in the place I am in, including blocking virtually any and all sunlight.

I do know that ambient lighting can be beneficial to the eyes, however. I solely came up with the original question out of curiosity and actual real life setting in mind.

The display I use does look like it is from the control panel of a submarine but that is not a problem to me as a programmer that uses no syntax highlighting as I see no need (or any positive effect from highlighting in my case: I wouldn't read a novel with different words in different colors; I find such features in editors distracting (and Vim or a similar editor without plugins tends to be pure bliss compared to IDEs)) to highlight syntax while programming; all the semantic information I need is in the source code text (i.e., without color data) itself (excluding e.g. colorForth when rendered the way that language is (AFAIK) typically rendered on the screen).