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Old 30th December 2016, 08:15 AM   #1
Gyuri is offline Gyuri  Hungary
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Default Visual Snow

Visual Snow

Are there anyone else here, who is experiencing this phenomenon?

https://www.theguardian.com/lifeands...n-doesnt-exist

https://en.wikipedia.org/wiki/Visual_snow

Mine is mostly like on the right pic on wiki.
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Old 30th December 2016, 10:06 AM   #2
HumbleDeer is offline HumbleDeer  Belgium
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Seems nasty to have brr. I'll keep it at my hallucinations. :P
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Old 30th December 2016, 11:00 AM   #3
Gyuri is offline Gyuri  Hungary
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I haven't disturbed at all.
For me, my vision it isn't like this on the picture.
I can't see black spots or similar things as on the pic.
It appears only at night or only in total darkness.
Or, I tested it now, if I look up to the clear blue sky, there are very small, pinpoint size blinking sparkles.
Actually, these are anywhere, where I look, but masked by objects.
I have these sparkles, ever since I remember.
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vision snow.jpg
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Last edited by Gyuri; 30th December 2016 at 11:06 AM.
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Old 1st January 2017, 06:38 PM   #4
Pano is offline Pano  United States
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Visual Snow
Normally no, I do not see this even with my eyes closed.
There have been a few times I've seen it very briefly when extremely tired and sleep deprived. Then it was just like old analog TV snow.
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Old 1st January 2017, 07:07 PM   #5
scott wurcer is online now scott wurcer  United States
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Quote:
Originally Posted by Gyuri View Post
Visual Snow

Are there anyone else here, who is experiencing this phenomenon?

https://www.theguardian.com/lifeands...n-doesnt-exist

https://en.wikipedia.org/wiki/Visual_snow

Mine is mostly like on the right pic on wiki.
Yes it's called ophthalmic migraine very scarey the first time you get it. After two instances 25 yr. ago it has never returned. I need not say some extreme drinking took place the night before.

The floating sparkles could be a blood pressure/brain oxygen issue, please see a doctor for your own good.
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Last edited by scott wurcer; 1st January 2017 at 07:10 PM.
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Old 1st January 2017, 07:24 PM   #6
Gyuri is offline Gyuri  Hungary
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Yes, I read it.
I never had a migraine.
Even a simple headache to me is occurs only once in a leap year.
And if I drink a coffee, it has gone in ten minutes.
However, those little sparks are always there.
There's more, but I'm afraid, my English is too weak to describe this.
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Old 1st January 2017, 07:33 PM   #7
scott wurcer is online now scott wurcer  United States
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No headache was involved, migraine is a larger neurological disorder not just pain receptors. Please Gyuri don't seek medical advice here, see your doctor.
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Last edited by scott wurcer; 1st January 2017 at 07:37 PM.
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Old 1st January 2017, 07:38 PM   #8
W0J0 is offline W0J0  United States
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Ahhhh good old visual snow. I remember this quite well.. After a night of recreational cough syrup use, the sun would creep over the horizon and usher in that familiar feeling of watching a uhf station that was almost tuned in. That was many years ago. In present day, I suppose I do see it faintly with my eyes closed and when tired--I guess I attribute it to getting older and flashing myself a couple times while welding.
The one that's really scary is scintillating scotoma. I get this a couple times a year with migraines. Though the migraine is usually painless, the loss of usable vision puts me down for the 20-40 minutes that it typically persists.
And, yes, do see a Dr about those shimmering floaters.

sent from my mobile look-at device
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Old 1st January 2017, 08:15 PM   #9
Gyuri is offline Gyuri  Hungary
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It is very kind of you are worry for me.
Those little sparkles are with me more than 57 years.
I do not think I would risk anything except a stroke.
But it will not because of the sparks for me but my wife.
Although she is with me for over thirty years.
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Old 2nd January 2017, 01:08 AM   #10
Tubelab_com is offline Tubelab_com  United States
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I have been living with what I call "background noise" in my vision for as long as I can remember, although it might have intensified with some LSD use in the 1960's.

It is not noticeable normally unless I look for it, except in dim light. There the "noise figure" degrades reducing the S/N. Worst case is twilight with the fading sun behind me. Sometimes I get the snowy image effect, but never as bad as the example in previous posts.

I also get the negative image ghosting when staring at a high contrast image for a while and then closing my eyes. It can remain for a few seconds, or several minutes.
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