Does Dyac2 still pose potential harm to the eyes?

[m1873]

I have experienced a 2566k monitor, and Dyac+motion blur removal is very useful for me, but it makes my eyes uncomfortable and I cannot persist in using it for more than half an hour. Until last week, I experienced the 2546x and turned on Dyac2 for five hours without feeling any discomfort like the 2566k. But I still have some concerns about whether there is a potential risk of eye damage with Dyac2?

[Supermodel_Evelynn]

Dyac has no harm to eyes.

It's your brain tricking you

[Avi]

Dyac has no harm to eyes.

It's your brain tricking you

What?

There's no difference between dyac and dyac 2 in terms of backlight flickering. If you're sensitive to it so you supposed to feel uncomfortable with any blur reduction.

Im sensitive to it too and i was using it for a couple of months before noticing this is the reason my eyes are burning. I think it messed my eyes. Having difficulty at night. It takes time to my eyes to adjust.

[kyube]

What?

There's no difference between dyac and dyac 2 in terms of backlight flickering. If you're sensitive to it so you supposed to feel uncomfortable with any blur reduction.

Im sensitive to it too and i was using it for a couple of months before noticing this is the reason my eyes are burning. I think it messed my eyes. Having difficulty at night. It takes time to my eyes to adjust.

There is a slight difference in the way the strobing is implemented, take a look at this review:

Source: https://youtu.be/jhsl3r-S3js?si=PeYP4fFuijrZMCSh&t=728 @ 13:07


Typical strobing would look like this:


Both of these are a potential eye strain concerns, as with any pulsating light source.

[Anonymous703819]

I have experienced a 2566k monitor, and Dyac+motion blur removal is very useful for me, but it makes my eyes uncomfortable and I cannot persist in using it for more than half an hour. Until last week, I experienced the 2546x and turned on Dyac2 for five hours without feeling any discomfort like the 2566k. But I still have some concerns about whether there is a potential risk of eye damage with Dyac2?

Effectively, strobing affect vision (does not take into account what others say), that's simply a fact.
I spoke about it to my new optical institute center where there are “young” optician and surgeon which plays or played in the past with this technology and yes, it does affect eyesight.
However strobing varies, on the 46x Zowie claims to have used double scan, that can change the situation.
Then the strobing can vary, be slower, faster, wider or thin but I had the same observation as you, the implementation of 46x is less annoying for the eyes but it remains strobing (not perfect by the way).

[Discorz]

One person using XG2431 PureXP said he got eye strain within 2h and headache after 4-5h, while with XL2546X DyAc 2 he got no eye strain or headache within the 4h he tested. Interesting stuff! Simply rolling the edgelight (DyAc 2) instead of globally flashing it (DyAc 1) can help eye health or at least postpone the side effects. This could be because light hits the pupils less aggressively. Full black periods are still there the lower the frequency of DyAc 2, so its not like parts of the screen are allways illuminated. I assume he tested max Hz. But MBR is still flickering and this doesn't necessarily apply to everyone. If you continuously feel discomfort, then ofcourse don't use it. It's your body telling you something is wrong.

DyAc 2 vs DyAc 1/PureXP @120 Hz


Animation source:
https://jisakuhibi.jp/review/zowie-xl2566x-plus#mbr-d2
https://jisakuhibi.jp/review/zowie-xl2546x#mbr-d2
https://jisakuhibi.jp/review/zowie-xl2586x#mbr-d2

[Supermodel_Evelynn]

Rolling scan has no eye strain

[Lev1n]

One person using XG2431 PureXP said he got eye strain within 2h and headache after 4-5h, while with XL2546X DyAc 2 he got no eye strain or headache within the 4h he tested. Interesting stuff! Simply rolling the edgelight (DyAc 2) instead of globally flashing it (DyAc 1) can help eye health or at least postpone the side effects. This could be because light hits the pupils less aggressively. Full black periods are still there the lower the frequency of DyAc 2, so its not like parts of the screen are allways illuminated. I assume he tested max Hz. But MBR is still flickering and this doesn't necessarily apply to everyone. If you continuously feel discomfort, then ofcourse don't use it. It's your body telling you something is wrong.

DyAc 2 vs DyAc 1/PureXP @120 Hz


Animation source:
https://jisakuhibi.jp/review/zowie-xl2566x-plus#mbr-d2
https://jisakuhibi.jp/review/zowie-xl2546x#mbr-d2
https://jisakuhibi.jp/review/zowie-xl2586x#mbr-d2

I sold my xg2431 due to headaches. Doesnt matter if i use purexp or default settings. I couldnt play games for straight 2 hours. Bought an second hand xl2546 I played around 30-40 hours last week dyac on ama is high and never had an headache and my eyes didnt filled with blood.

[Discorz]

I sold my xg2431 due to headaches. Doesnt matter if i use purexp or default settings. I couldnt play games for straight 2 hours. Bought an second hand xl2546 I played around 30-40 hours last week dyac on ama is high and never had an headache and my eyes didnt filled with blood.

Yeah, many other, including me found XG2431 to be a bit eyestrainy with either PureXP on or off. Although it's using classic DC dimming I did spot some PWM-like behavior. But actually a completely different factor could be the cause. I ain't goin' that rabbit hole.

XG2431Run 1-RGB 0 to RGB 51_2.png (142.63 KiB) Viewed 8963 times

However, the sync track does not line up with 1000 Hz. I'm getting more like 4.7 ms = 210 Hz PWM. Not sure whats going on.

XG2431 pwm_dimming.jpg (284.39 KiB) Viewed 8963 times

[Espionage724]

Dyac sounds gross:

DyAc/DyAc⁺/DyAc 2 is designed to reduce motion blur in LCD displays. “DyAc”, which is short for Dynamic Accuracy, reduces ghosting in fast game scenes, minimizes screen shaking in rapid firing, and enables players to track enemies more easily.

Why would anyone want dynamic anything especially when it comes to the images displayed to the screen? It's either fast-as-possible-at-all-times, or there's intentional latency added as a feature. I can totally see Dyac causing eye strain due to your brain expecting consistency, and not frames delivered at the potential speed of an algorithm.

Funny how none of these modern marketing tricks come close to a basic CRT