Not exactly sure what your phrase means.

I'll try to explain it how I see it.

I have always had a balance and dizziness problem.

So my doctor did some testing and found that I had a Imbalance
in my brain. So he sent me for vestibular physical therapy.

It technically retrains my brain in how to see.

I do things like put a A on a post it, hang it on a wall. Walk three feet
approximately back from it. Make sure I'm close to something I can
grab if I get to dizzy. And I do a head from left to right or the other
way. For 30 or 60 seconds. At varying speeds. Its according to
dizziness. If I can't handle standing I can sit down in a chair.

I then do it head up and down. Now this one I don't last 30 seconds
before I'm really dizzy. This one is very hard for me.


I also do one at home right now, that I stand in a corner, and have
a chair in front of me. Then I close my eyes, and try to stand
still. I start to move around immediately. And then come close to
falling immediately. Thats why the chair to grab ahold of.

So this one shows why the darkness is so bad for me. Up and down
makes me really dizzy no matter what I'm doing.

My eyes are unstable which sounds like a odd word. But I don't know
what else to use.

Donna