[disntthinkthis]

That sounds severe and so unlike what I’ve experienced. But some amount of noise in vision is normal, you just don’t notice it unless you focus on it, or have a background that really makes it apparently. Light is inherently noisy. If you look at a blank sheet of paper and all you see is #FFFFFF, you’re not paying attention.

[danparsonson]

One theory I've heard is that we normally filter out the noise but in some people that's not happening and thus they experience VSS. Likewise for tinnitus.