As expected, pretty sure blue light filters are about sleep quality, not eye strain. Not that they matter much, with most devices having programmed in light filters now days.
It was always kind of a scam. Computers always had color temperature settings. It is a sad fact that they use to all be set to around 9300K color temperature which is very unnaturally blue. Best color rendering is actually 6500K and people like me always reset them once purchased. You can also set them lower then that too say 3400K too.
Reason device makers used high color temperature was showroom. Two displays side by side, the lower color temperature will look yellow and no one will buy it. All about customer manipulation and marketing. As an engineer this always bothered me. Sell something not configured correctly to get the sale.
The one way lower color temperatures are better is that the eye is not as well corrected in the blue so vision should indeed be sharper with Amber sunglasses for example. There is some science behind that. Same for sleep issues. Lot of the other stuff seems more marketing and questionable.
How? I have a new monitor with a panel that is pre-set to reduce eye strain paired with one that is absolutely trying to look good on a show floor. So flux is great for the old monitor but makes the new one un-ignorably orange.
This, blue light affects melatonin production. Plus I mostly use them because I think there's a weak causal link between blue light and macular degeneration.
Really? Because my eyes definitely feel much better after immediately putting them on, while continuing to stare at a screen. I have a pair of glasses that are Rx level and have some anti-blue light coating that works amazingly well, and then a cheap non-Rx pair that works well enough. But both work. Unless it's just Placebo Effect?
Maybe the question is, what is "Eye Strain?" They're talking about visual performance, but usually when I put my blue light filtering glasses on, it's because my eyes hurt after looking at a screen literally all day, whether working or gaming (and when gaming, I often turn screen brightness way up so I can see everything). And when I put them on, the pain goes away. So I feel like there's some benefit there, but I don't know what exactly what is being acted on. Or again, it's just Placebo.
Do your blue light filtering glasses have magnification? Because magnification can definitely reduce eye strain by helping your eyes relax on close screens.
Is this a joke? Of course a 6" screen doesn't produce as much as a ball of nuclear fire
But that ball of fire isn't 12 inches from your face at midnight. And, the majority of blue light filter use is targeting sleep quality. A good portion of this comes down to cumulative exposure time. The best solution is to just not look at screens after a certain hour, but no one wants to do that.
No. Typically the sun is brighter. Also if your device is set to 9300K color temperature then it has more blue then normal. The sun is about 6500K and all display devices should be set to 6500K or SRGB where possible for best color rendering. Pros actually have a color calibration device to do even better.
Color perception and maybe eye strain also depends on surroundings. That is why having a neutral background behind a display that has a similar illumination level is recommended.
Not sure about 'eye strain' or sleep quality it whatever, but the lower blue light feels more comfortable to me, which is all I really wanted. I don't actually care about any quantitative health benefits that may or may not exist.
My experience with blue-light blocking glasses (purely anecdotal) is that my eyes really do feel less strained after a couple hours of staring at a computer screen. I don’t know if this is at all due to the blue-light blocking properties. For all I know it could be a placebo effect.
My new glasses had a blue light filter on them and I didn't know it. I can definitely say that I have an easier time falling asleep / having my eyes feel not strained because of it. For a year or so by now, I turn on the night light on my computer anyway, and that helps too. I am a programmer so I stare at the screen the whole day. It doesn't matter if it is placebo because I do feel the benefit and that's all I care about.
Isn’t eye strain more related to reduced blinking frequency? People tend to blink less when they are focused on something up close. Like people who read way too long right before they sleep often also have eye strain.
Especially for sleeping issues, but also for eye strain, I recommend using a program like flux (for a computer) that allows you to set the color temperature for the day and the gradually lower it further at evening and night. This along with dimming or using different lower temperature lightbulbs in the evening/night (not being exposed to bright/florescent lights) really helped me with falling asleep.
edit: also, lowering the brightness on the monitor itself (mine is set to 27) and in the graphics card control panel (39 for me), and then manually lowering it further in the evening/night in the control panel (25>15>9>0 is how I do it)
I think the glasses provide a place to rest the eyes in either looking at the rims or unfocusing the eyes looking at the lens.
My prescription lenses for near-sightedness seem to help me focus my eyes better at all distances, even though the visual clarity improvement only occurs at a far distance.
I like this thought because my personal experience is wearing regular perscription glasses and staring at a screen 10-14 hours every day with no eye strain or headaches. My sister loves and swears by the blue light filtering (but doesn't wear glasses otherwise)
Blue light only matters in a specific, narrow range. Most cheap commercial blue lights do not filter this part of the range, so they lie and say some unverifiable stuff about "eye strain" which itself is an unverifiable condition that people can work themselves into a tizzy over.
Remember being told low light would cause eye strain? Not real. Looking at stuff too close can cause some fatigue, which is managed by looking at something 20 feet away to get your eyes to flex. It has nothing to do with light hue or quality.