I am not sure about , the disapearing people,

but , I have heard it said that , white sparkes , is looking at a form of energy,

do they look like contained camera flashes that move and disapear.

When you see them , I suggest you stick with them and try to have non thought and see if you can see more of them or focus in to see them brighter,

Things in the spiritual realm are real--and just cuz you can see dont make you crazy--it could just mean your gifted. I myself have seen a lot of things that others cannot see. And I know im not crazy.

Have you ever dabbled with astro-projection or know someone who has. This could be what you are seeing.

Sounds like migraine to me. Or an eye condition called central serous retinopathy. Sorry if I sound a little sceptical!

I see spiritual beings from the corner of my eye all the time. Sometimes they are the same ones standing in the same spot like gardians. Other creep around grotesquely looking for some kind of mischif to do. Its weird.