Funny thing, I was recently thinking about this for days on end. Good I finally know what they’re called. Though, I must say I don’t see them as clouds at all. To me the situation looks like if I was in outer space, looking at literally millions and millions of white dots of light, like stars. Whenever I try focusing on one of these little dots, everything just starts moving around and it looks like I’m about to enter lightspeed. It’s a very fascinating experience, everything begins to swirl around, I begin to feel lighter than ever, like being transported somewhere in the universe.
Unfortunately, I find it really hard to keep attention on these phosphenes, and after a few seconds they escape my line of focus. Even worse, they seem to be moving all over the place, making it hard to catch sight of them. I usually try chasing them, but after some time my head starts hurting. Though from what everyone in here has said, I guess one must not chase them, but wait for them to grab your attention and let them guide you. It seems like solid advice, I will definitely try this out, see where it takes me.
By the way, I believe phosphenes can actually be seen with your eyes open as well, one just has to put a little more attention to what they see. They tend to blend in with the rest of our surroundings, most likely due to the vast amount of colors and brightness we see in the environment. I find it easier to notice them at night, when looking at a place that’s very dark or has a very dark shadow on it. It makes you think about a lot of things as well, the way they kind of look like pixels in an image that together make up the things we see on a day to day basis. Food for thought.