As an aside, I'm on my computer for three to four hours a day (necessary work plus web surfing). And the eye fatigue was getting worse and worse. So I bought a high-quality pair of blue light blocking computer glasses. They have made a BIG difference. It was money well-spent.
Ultraviolet light from the sun does this. Use UV blocking sunglasses, and not cheap ones.
Blue light leading to blindness? Hype. Get reading glasses that block the blue light, if you’re worried.
Midnight Freepaholics need to tell your monitor its night time all the time and have it “warm up” the light from your monitor. Much less eye fatigue with out the “cool” blue light. Acer and Samsung both have display options to do this on a timed basis or all the time.
Science by press release is bad science.
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From the allaboutvision.com website:
“Three dietary carotenoids — lutein, zeaxanthin and meso-zeaxanthin — form the pigment in the macula (”macular pigment”) that protects the millions of photoreceptor cells located in this small region of the central retina.
In particular, the antioxidant and anti-inflammatory properties of the macular pigment reduce oxidative stress on the retina caused by high-energy blue light, which is believed to contribute to the development of macular degeneration.
Also, blue light has shorter wavelengths than other visible light, which scatter more easily in the eye, causing glare and reducing contrast sensitivity and visual acuity. The macular pigment selectively filters out image-degrading visible blue light for sharper vision.”
Staring at a screen for hours on end is probably why my eyesight is going to hell.
Follow-up to earlier reply: British Journal of Ophthalmology study on sources of protective carotenoids:
RESULTS Egg yolk and maize (corn) contained the highest mole percentage (% of total) of lutein and zeaxanthin (more than 85% of the total carotenoids). Maize was the vegetable with the highest quantity of lutein (60% of total) and orange pepper was the vegetable with the highest amount of zeaxanthin (37% of total). Substantial amounts of lutein and zeaxanthin (30–50%) were also present in kiwi fruit, grapes, spinach, orange juice, zucchini (or vegetable marrow), and different kinds of squash. The results show that there are fruits and vegetables of various colours with a relatively high content of lutein and zeaxanthin.
CONCLUSIONS Most of the dark green leafy vegetables, previously recommended for a higher intake of lutein and zeaxanthin, have 15–47% of lutein, but a very low content (0–3%) of zeaxanthin. Our study shows that fruits and vegetables of various colours can be consumed to increase dietary intake of lutein and zeaxanthin.
ping for later
I turn off the lights and go to bed and notice all these blue fireflies glowing from the various electronic equipment I have.
I have used black electrical tape over some of the really bright ones.
I have those glasses now. My wife just got a new phone that has the night setting on it (amber colored). She’s sleeping better.
I read something awhile back - it was the movie “Blade Runner” iirc that used the blue light for it’s futuristic screens, and that set the trend for using the blue light.