Could this be lack of blood flow?

Not sure where to post this because I'm kind of just guessing at a self-diagnosis here.
I'll post my original explanation of what's going on from another thread here, and you can either read it or skip it and go to my question underneath this:
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Everyone is stumped, wanted to post and see if anyone has experienced anything like this before.
M, 33, 6'3, 155 lbs, no other health issues.

November 2021 start noticing my focal point in my vision seems to have shrunk.
Over time this continues to worsen.
I go to eye doctor and he says there is nothing wrong, change glasses. I change glasses, no affect.
Fast forward to today (July 2022), peripheral has worsened to the point that I do not even see my peripheral anymore unless I try to focus on it. There are no black spots, no missing spots, no "shady" areas, my full field of view is there, IF I focus on it and try to see it. Otherwise it is like looking through a gift wrapping tube.
It's hard to describe because it is so wierd.
The best description is as if you were daydreaming, staring off into space. You are still seeing, but you are not really "seeing" until you think about it, or something gets your attention. Then you realize you were staring. This is what my peripheral is like all the time. I have to purposely focus on it to see it. Or something shows up in my peripheral that makes me notice it. Otherwise it seems like my brain is just not showing it to me.
Some people know the feeling of standing up very fast and your vision seems to disappear for a few seconds, this is also a good description of what my peripheral looks like all the time.
My brain still notices the peripheral, and I can tell because if I am approached on the side, or a car beside me approaches in traffic, I suddenly notice it. My brain is basically seeing my full field of view, but I don't notice it unless I focus on it. As if it's not showing it to me.
It does fluctuate and gets better and worse over the coarse of days.
We have tried several eyeglass prescriptions, and several contact lens prescriptions.
An interesting observation, when I switch glasses/contacts, the fluctuations change for a few days. It may stay better or stay worse for a few more days. But other than that it continues to fluctuate, meaning that it does affect it somehow, but never fixes it.
So far, I have seen 9 ophthalmologists, 3 optometrists, 1 retinal surgeon, 2 endocrinologists, and one neuro-Opthalmologist. I have had stacks of papers of blood work, an MRI with and without contrast, several OCT scans of the eye, optic nerve, and all the stuff inside there, several prescriptions of glasses and contacts, and a thyroid ultrasound.
"We don't see anything wrong with you."

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My idea is with blood flow affecting peripheral vision. Some people, including me, have a drop in blood pressure in the head if they stand up quickly, making their vision blur out for a few seconds. It's not anything big though, no treatments or anything.
For those that skipped the long explanation, my peripheral looks like this 24/7 now.
Mine also does it even if I simply look up. Which seems kind of strange.
I also get fatigued a lot. No doctors have mentioned this, and my neuro-Opthalmologist quickly dismissed it as soon as i thought of it.
Could this have something to do with lack of blood flow to the brain? Artery in neck clogged or something, not giving the visual part of the brain enough flow to operate correctly?
If standing up quickly can cause a pressure drop, causing your vision to fade for a few seconds, then doesn't it make sense that your peripheral vision being faded 24/7 could be from a permanent pressure drop??
(Also for those who skipped, we already did MRI, about every blood test known, and OCT's for every eye exam in existence).

Anyway, just thought somebody might have experienced something like this before, or know more about blood pressure and it's affects. Thanks for reading

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