I'm quite sure the visual disturbances will be annoying (and sometimes amusing)
for a long time. As it's not life-threatening and seemingly impossible to find a cause I'm not expecting some effective treatment anytime soon either! Although whilst web-browsing on astronomy websites my husband read an article about spending time outside in the dark helps with retinal disease. It does make some sort of sense as it is the light/dark sensors that are affected.
Feeling stressed makes the disturbances worse(looking through a pile of squirming worms!) as does overdoing exercise.
Likewise if you need to check out something, please post.