Motion Sickness that Last for Days on Certain Computers
ryans Thanks. The checks for BVD were negative. I am working with a vestibular rehab to fix convergence deficiency. But it seems odd that I am fine on my work laptop and not the other computers. If it was solely an eye issue, I would suspect it would occur across all computer screens. Could it be the temporal dithering? I thought I had that disabled by ensuring 8bit.
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Dizzy You might want to checkout @martin post or his blog here. He, like many of us, have no symptoms working on older tech. But whatever dithering or other kinds of flicker did, it triggered underlying vision issues.
Dizzy . I am working with a vestibular rehab to fix convergence deficiency.
That sounds like a binocular vision problem. Did you get a specific diagnosis? Is the rehab with a physiotherapist / physical therapist or an eye doctor?
Dizzy I worked with a vision specialist who twice ruled out BVD but did confirm convergence insufficiency for which I am doing vestibular therapy.
Where do you live? In USA, convergence insufficiency should be treated with vision therapy, and is considered a form of BVD. What kind of exercises do you do for vestibular therapy?
Just took a picture with my phone of one of the “bad” computers and I can see bands on the photo, but not when looking at the screen with my eyes. This may be the dithering effect others have mentioned. Going to take pictures of the other computers now to compare (along with increasing the hz to see if more bands show on the photo
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ryans I am in the US and suspect this is a type of BVD since the eyes are not working together. I am doing vision therapy along with vestibular to bring the eyes together (left one goes out when focusing on an object). The current therapeutic phase is focused on covering my good eye and tracking with the left. It is starting to work.
I am also going to take pictures of each screen as the photos tend to show banding (where my eyes don’t see it). Thank you for taking time out to assist me!
And wow. Just turned up the Hz and it showed even more banding/screen checkers…. I need to take a photo of my “good” computer to compare but it appears that dithering increases with Hz.
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Not sure if the pattern you see is PWM or moire effect. I don't think temporal dithering would be easily spotted on a single image, since it "shimmers".
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How would I check the PWM?
Keep in mind that temporal dithering can be confused with poor Vcom tuning. Both suck, but temporal dithering can potentially be cured through software configuration, but poor Vcom tuning is a defect of the matrix.
Thank you both. I will try the slow motion capture