I found this today when trying to explain my visual changes to mum. The animation in the third image under Presentation is a lot like what I see
My pattern is different though- it's the Widmanstätten pattern
http://en.m.wikipedia.org/wiki/Widmanstätten_pattern
and it's in the right visual field.
So that's what my sparkly scotoma is called - scintillating! It is due to the damage to my left occipital cortex from tumour being removed, is present all the time, and is not associated with migraine.
It's nice to be scintillating at something ;)