I’ve tried almost every type of screen out there—LCD, OLED, and even E Ink devices like the Tab Ultra—and they’re all unbearable. But somehow, I can tolerate a DLP projector, even though it uses PWM. That makes no sense to me. Is it because projectors don’t rely on polarized light like most modern screens? Could polarization be the thing triggering my symptoms? Or are there other factors about projectors that make them easier on the eyes compared to regular displays? If anyone has insight or experience with this, I want to know. What makes a projector so different, and why can I tolerate it when I can’t stand anything else? Let me know your thoughts. I use a Vivitek d554 primarily.

You can try another projectors to say for sure that "projectors are safe"

@"simplex"#p40585 yes tried multiple all safe

@"moonpie"#p40595 im just saying mine and others' work for me grow a brain vivitek d554 The entirety of your profile is you disagreeing with people. What a guy, lol.

@"moonpie"#p40595 also if you read the replies you would see that I have tried several different types

If DLP is safe I'm real Santa Claus.

@"smilem"#p40601 yea on paper it doest make any sense but it works for me somehow that's why im making this post lol

@"evthelegend"#p40583 Polarisation might be part of it for you, though there probably isn't any polarisation in e-ink screens - I could be wrong, easy to test with some polarised film or glasses. There are some big threads on here on polarisation that are worth reading if you haven't already. There are two other factors to consider, people sit far away from projectors which can help with eye defects, and the resolution of your projector is low which could help a bit too. I used to have a tv that was much more comfortable when watching non hd channels.

get to nearest ZEPTER distributor, and test a pair of Fullerene C60 doped glasses lenses. Make sure to choose indoor lighter color version. https://shop.zepter.com/Medical/smart-glasses/HYPERLIGHT-OPTICS-SET,-INDOOR-LENSES I wonder if they remove the flicker? The price is 180Eur if you manage to get good discount. But only if it works as claimed. Perhaps these could remove the dithering too.

I Can’t Use Screens, but a Projector Works—Is Polarization the Hidden Culprit?

jordan

Clokwork is there one specific model that is your go to?

PacificHike

evthelegend This is interesting. So are you using it as a monitor (close up) though? Or just as a TV?

randomboolean

smilem Have you been able to test this?

eduarchitect

Clokwork do you know if epson projectors actually turn off blue light if for example you open a red color image in fullscreen? So is it really viable to block blue light at night like an Oled?

Clokwork

eduarchitect I'm not entirely sure. It's using a white laser I believe so I am lead not to believe that blue light is its larger issue.

RecentlyDeceased666

evthelegend For me the culprit was temporal dithering not pwm.

And perhaps contrast sensitivity. All modern tvs messed me up but my 2011 tv and all my friends old tvs did nothing.

went down the rabbit hole of pwm etc. Turned out it was temporal dithering, I am symptom free after changing my tvs color gamut. Took me years to narrow it down

AshX

RecentlyDeceased666

I believe this is my problem, as well. I have a Samsung Plasma TV from 2011/2012 with very obvious PWM and it’s fine. I can also use an iPhone 13 on iOS 15 (before dithering got worse) and it’s fine.

I’m curious what devices (computers, particularly) you’re able to use? It’s getting harder and harder to get around dithering.

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