[smallnamespace]

That's odd, in that I've probably noticed visual snow-like artifacts ever since I was a child, but it never bothered me even a tiny bit.

Couple of personal observations:

- Most of the time I only notice snow or artifacts if I'm consciously looking for them or don't have anything else conscious occupying the brain (e.g. staring at a wall out of boredom, or closing my eyes and still paying attention to visual input)

- Once you start looking for visual artifacts, you'll see them everywhere. Right now if I stare at my ceiling in dim lighting, I see little multicolored 'heat wave' patterns roiling about as my visual sensory system works overdrive to extract more signal that there actually is. I also notice a slight 'ringing' halo around bright objects. But as soon as I try to do anything at all, my brain apparently decides that other things are more important and actively filters all this stuff out

Don't discount the possibility that you're putting yourself in a vicious cycle here:

perception of something wrong -> heightened subconscious threat processing (your brain starts looking for a problem in your visual perception) -> more conscious awareness of visual artifacts -> perception of something wrong

The way to break that cycle is to just worry about more important matters, and it'll either go away by itself or you'll stop caring.