I have been noticing this in my eyes as well Rennur!! I do not know what it can be, some times the shadows look like lines when I turn my head left or right or sometimes they can look like cloudy circles! I do not know what they can be sadly I am cash strapped to see an eye doctor but I have heard it could be a range of things from Viterous floaters to Aura/Negative Photophisa to even a possible Retinal Detachment.
I also looked on this site and abroad the internet and finding others with the same problems and no one can come up with why this is going on. I mostly notice these on a bright wall like you do.
weird.
I am finding that sometimes the doctors contradict themselves or each other. YES you can have a permanent migraine aura without infarction. This doctor HIMSELF said this, so I do not know why now he is saying ' NO. IMPOSSIBLE." It's so weird
oh wait, permanent aura (sorry)
what??? they don't last more than several months???? I've been having this for a whole year!!
Actually, I am in the process of being worked up for retinal migraine with PERMANENT aura.
Visual aura's don't last several months. They are there max for about the duration of a eye migraine attack (say 30 minutes to several hours).
You need to see an ophthalmologist (Eye MD) preferably a neuro-ophthalmologist.
JCH III MD