nitins_jakta
Joined 7 years ago
Karma
33
Submissions
20
Member since
Apr 9
Recent submissions
Comment · 2 years ago
Comment · 3 years ago
Great stuff. Next, would love to see Apple give an option for people sensitive to temporal dithering or PWM.
It triggers migraines (or vestibular migraines), tension headaches and dizziness in a minority.
See https://www.change.org/p/apple-add-accessibility-options-to-..., or FlickerSense.org, or LEDStrain.org forum.
Comment · 3 years ago
Too bad there's no Linux port.
Comment · 3 years ago
There's a forum/community of people who get migraines / severe eyestrain from LED bulbs at LEDStrain.org. It's likely related to any LEDs that flicker (PWM).
Also a PhDs website: www.FlickerSense.org
Comment · 3 years ago
Some people get much more severe symptoms including migraines at LEDStrain.org
Comment · 5 years ago
I hope Apple will add an accessibility option to disable temporal dithering in the OS.
It causes a minority of people eyestrain, vertigo and migraines. See LEDstrain.org.
Comment · 5 years ago
I agree, apple has done great with things like VoiceOver.
There is other stuff they can do, like a toggle to disable temporal dithering. Or actually test their devices with people with binocular vision dysfunction.
Comment · 5 years ago
Older systems like a ThinkPad from 2013 work. Something changed around then for the display tech.
Comment · 5 years ago
Apple still won't take some accessibility issues seriously, which is unfortunate given they are a leader in this space. They don't test their devices on people with binocular vision dysfunction, although I've asked them to.
There is a whole community of people on LEDStrain.org who suffer from severe eyestrain, vertigo, headaches and migraines to the point where these devices are unusable for a minority of people.
One possible cause is temporal dithering which can be seen as the dancing pixels on a slow e-ink display: https://youtu.be/0y-I3hqQgCQ. Windows also uses this technique, but Apple's causes more strain for some reason.
It would be great if apple could look into this.
Some of us are desperate and will gladly pay for help. I am at risk of losing my IT job cause of these companies. I have a binocular vision dysfunction but treatment is not working well.
Any ideas from the community as the technical root cause?
Edit: not sure why I am being downvoted. Please have some empathy!
Comment · 5 years ago
Great to hear you found a solution. I believe Neurolens is focused on treating exophoria where the prism correction required is different at near vs. distance. In most patients, the correction required at near is greater.
The Neurolens are also unfortunately very expensive and seems to not be covered by insurance. But I think most people would gladly pay out of pocket to get relief. I surely would.
Comment · 5 years ago
Thanks for pointing this out.
We actually have a discussion about Neurolens on LEDStrain: https://ledstrain.org/d/754-trigeminal-dysphoria-and-neurole...
I plan to give them a try. But unfortunately it does not work for everyone.
Have you had success with them? Many other members have convergence excess (esophoria) or vertical heterophoria.
Comment · 5 years ago
Ah, so for most of us LED itself is not strictly the problem. Low quality ones with a low refresh rate, like in some department stores, are a problem.
It is likely other sources of flicker like temporal dithering (FRC), you can see it here (it is on Windows too): https://youtu.be/0y-I3hqQgCQ
The visual noise/dots you see is the dithering. The e-ink display is slow enough so we can see it.
People with BVDs are strongly affected by that noise...and unfortunately simple pair of glasses does not help.
Comment · 5 years ago
Unfortunately it looks like Apple still has no option to disable temporal dithering or other sources of flicker (PWM, pixel inversion, etc).
A minority of people have binocular vision dysfunctions (like convergence insufficiency) that give them severe eyestrain, headaches and migraines when this flicker occurs. Apple should treat this like an accessibility issue (like VoiceOver) but does not. The current treatment from behavioral optometrists is not always effective.
I recently found a whole community on this: https://ledstrain.org.
If you have expertise in displays, please join us on LED Strain! We were hoping Apple would address these accessibility issues and let people with vision problems use their products.
Comment · 7 years ago
Backing up now, thanks. Even worse I'm an Android user. I don't have a good solution for the people that mail me every few months. Oh hey, Google might lock my account because I didn't fork over 14k in fraudulent charges, can you start emailing me from my Outlook email instead?
See https://FlickerSense.org for a PhD scientists personal account, and, https://LEDStrain.org forum full of people that get migraines, dizziness, eyestrain and headaches from LED lights and other forms of flicker like temporal dithering.