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Ask HN: How do you prevent eyestrain with daily computer use?

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Re: Ask HN: How do you prevent eyestrain with daily computer use?

#111
post #84

Earlier quoted context omitted.

How fast is the 'worlds fastest', can you actually use these for typing (with your eyes open)?

Yes, completely usable. I've been using these monitors exclusively for all of my tasks for the past 6 months. https://www.youtube.com/watch?v=5pevlmk5kQs&t=1409s

Thanks! That's very nice, a lot better than I expected.

Re: Ask HN: How do you prevent eyestrain with daily computer use?

#113

1) Don't sit too close to your monitor(s). They should be as far away as they are big, so if it's a 23" monitor, at least 23" away from your eyes. 2) Place the top of the monitor at eye level 3) THE BIGGEST: The 20/20/20 rule. Every 20 minutes, look at an object 20 feet (6m) for 20 seconds. These three changed my computing life forever, and for the better, especially since I'm on a computer 10 hours a day most days.…

If you go from, say, a 2K 23" monitor to a 4K 46" monitor, you want to be at the same distance to see the same pixel density, and just have more monitor real-estate subtending a larger slice of your vision.

You don't sit farther back if you install a second monitor; why would you do that if you obtain more size in a single unit?

Re: Ask HN: How do you prevent eyestrain with daily computer use?

#115
Sorry if this has been mentioned in a previous comment, there are many!: what I find really useful is f.lux for lighting and colour. Especially makes a difference later in the day. I noticed I couldn’t fall asleep after a long d’au staring at the screen and this really helped...

Re: Ask HN: How do you prevent eyestrain with daily computer use?

#116
post #79

I got glasses that were focused at approximately the distance my monitor is from my face (~1 arm length). I'm near sighted and the monitor starts getting blurry at just the right distance. I have glasses for nearsightedness that are focused very far out (the common case). Wearing them for constant work at arms length really tired my eyes out. So, I'd frequently work without my glasses, but hunch forward a little to m…

Seconding the recommendation for getting "task glasses". It is probably the single most impactful change one can make. I ordered a pair (via Zenni, just some regular polycarbonate lenses) that are at just the right optical power such that if I fully relax my eyes, objects 1 metre away are in focus. When my monitor is that far away, it's at optical infinity and very comfortable to look at for long stretches. It's a ve…

How do you calculate this? Is it based on your previous prescription somehow, or does it require another optometrist appointment?

Re: Ask HN: How do you prevent eyestrain with daily computer use?

#117

Simply make text bigger . 125% DPI or 125% "zoom" depending on the OS/application help with eye strain massively, and it surprises me how few colleagues are willing to try it (e.g. "I can see perfectly, why would I increase text size?!"). Between that and lowering a monitor's brightness to below 50% (often around 35% depending on brand), are my biggest tips. Windows now has a blue light filter built right in (Setting…

Yes. And while you're at it, use double line spacing in your IDE too. You can feel the strain lessen.

Re: Ask HN: How do you prevent eyestrain with daily computer use?

#119

Earlier quoted context omitted.

"Buy a good screen" - so what defines a bad screen in the context of being good or bad for the eyes? LCD screens have neither the clarity problem nor the flicker problem that CRTs have.

Colors, brightness and angle of vision. Without going into specifics, the shortest way to get a good screen is probably to buy an IPS display (it's barely more expensive). Pretty sure all IPS display are at least okay. The cheapest displays are TN because it's cheaper to manufacture, sadly that technology has very bad angle of vision, move a feet to the left and another feet and you'll see the image looking different…

But neither color accuracy nor poor viewing angle are issues that cause strain on the eyes. Blinding brightness certainly can, but are there really screens these days which cannot be dimmed-down enough? I have a hard time believing it.

Re: Ask HN: How do you prevent eyestrain with daily computer use?

#120
post #91

Earlier quoted context omitted.

"Buy a good screen" - so what defines a bad screen in the context of being good or bad for the eyes? LCD screens have neither the clarity problem nor the flicker problem that CRTs have.

Some monitors do have pwm backlights which flicker extremely fast, and can worsen eyestrain or cause headaches for some. I've seen it even on monitors that advertise being flicker free.

The problem is if their PWM is too slow, to the point where we actually see the flicker directly, or just barely indirectly (e.g. by seeing a "slideshow effect" when you move a finger back and front against the lit-up display).

Concensus among opticians and ophthalmologists is however still that the main cause for eye strain is focusing your eyes at a short distance for an extended period of time.

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