Hi guys! Like many of you here, I have a problem with artificial light in general. Whether it's streetlights, party lights, night lights, or light coming from the pixels of digital devices—whatever it is, you get the idea—it disturbs my life. It feels like living in a world where I constantly feel "on edge of being sick" because of it. When I'm in a disco, at a party, or admiring a skyline, I would like to enjoy the experience without suffering side effects from the lights. For example, the strain can cause me to have anxiety -> panic attacks or just stay in a "fearful" state for something. Therefore, like you, I have tried to find suitable devices, such as e-ink displays, which have helped me a lot. I realized that the problem lies with the lights themselves. Unfortunately, we can't expect to travel to Korea and find a street with all "flicker-free" lights or attend a show in the USA without encountering annoying lighting. There will always be lights that bother us. So, I was wondering if there is something we could put on our eyes that could "inhibit" this annoyance and what it really depends on. Does it depend on our eyes or on how our brain responds to stimuli?

Xenon car headlights have UV spectrum, thats why it looks very bright comparing to halogens, keeping same wattage. The IPS/VA panels dont have UV protectors, these layers are built into the LED emitters themselves. God only knows whether manufacturers use them, since the UV range (A,B,C) is from 100 to 400 nm, and all spectrographs measure from 350 to 750 nm at best

@"int"#p40696 Nice! Could you link some of them? @"moonpie"#p40698 What about Pulse Duration Time and Pulse Modulation Depth?

The real problem its in everyday life

Zodios

In my opinion core root action should be to find health (medical) issues that cause strain and fix it.
It is not possible to search suitable monitor/phone/car/bulb … whole life.

moonpie

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karut

lillo9546 Have you considered vagus nerve dysfunction? Do have a history of trauma or exercise? How is your muscle tension in your psoas? How is your breathing? Do you suffer from forward neck posture/neck tension? Gut issues? Exploring these areas could yield you benefits.

The more I increase my vagal tone through things like singing or cold water exposure, the better my gut is, the more anti-inflammatory my diet and the more regulated my nervous system is the better the eye strain is I think.

lillo9546

There are lots of intelligent responses in this thread.

@Zodios , that's exactly what I was referring to in my initial post.

@moonpie , that's really interesting! I hadn't thought of that.

Even if the wiki says

"Problems with human vision

It seems that in many cases bad tech triggers binocular vision problems.
It doesn’t matter if you ever had any binocular vision problems or if your vision is perfect. Bad tech (or bad lighting) may interact with binocular vision, either causing additional troubles to people who have underlying problems or causing troubles to people who have perfect vision."

@karut , good suggestion.

I don't think I can go to a doctor and ask them to check everything from my hair to my toes.

What can I do instead? Where should I start? I think it would be better to have a checklist of things to examine and go by exclusion. Thanks!

int

You can try orange glasses that block UV and Blue light. Since "White" LEDs are actually blue LEDs with phosphor material in front of them, if you block the fastly blinking blue part you will only see the light created by the phosphorescence which can't flicker as fast due to nature of the material. Ideally there would be optical notch filter glasses that only block the blue from LEDs so the glasses won't look so orange, but the only ones you are likely to find are laser safety glasses.

lillo9546

int Nice! Could you link some of them?

moonpie
What about Pulse Duration Time and Pulse Modulation Depth?

moonpie

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moonpie

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simplex

moonpie

Yep, I agreed. One of my lamps has 100hz pulsations, but form is sine-wave, similar to incandescent lamp, and feel okay.

Perhabs, high freq modulations (> 1000hz), irritates the nerves more than low-freq ( remember old samsung s6… s10 which had sine-wave 240hz PWM and did nothing for eyes )

lillo9546

So we have new OLED smarthphones with a low PWM freq, but good because of a better waveform?
If so, who does those tests? I see notebookcheck only check the PWM? (Am i correct?)

Also, how do I know which is the best wave for my eyes?

simplex

lillo9546 Also, how do I know which is the best wave for my eyes?

My experience, sine-wave cause no problems https://ledstrain.org/d/2760-sony-tv-factory-reset-gave-instant-eye-strain/2

lillo9546

simplex Nice! It would be actually good to know which devices have this sine wave. Do notebookcheck show it?

simplex

lillo9546 Do notebookcheck show it?

Nope, they do not measure such items (or not show it). Almost all modern TVs I measured in ship in jan'24, were square-wave PWM. I dont know why in old (safe) devices, engeneers made sine-style PWM and nowadays - dont do that

moonpie

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