'Rare condition gives me TV static in my vision'

Posterior Vitreous Detachment (PVD) can cause blood leakage into the eye, analogous to the far more serious retinal detachment. Its age related mostly, but a bloody good bang can bring it forward. Aside from giant floaters, you get a cloud of blood corpuscles which resolve (at least in my case) as floating circles. I was beseiged by ASCII "0" characters, as each eyeball went.

A different kind of TV interference but it also reminded me of B&W TV in 625 line days, with a weak signal.

In my case it lasted about a month. Either your brain-eye ML works out how to ignore it, or the blood subsides, or a bit of both.

Sucks to be old, but considering the alternatives I'll take it.