Eyesight floaters are a very common eyesight problem throughout the world — they vary from person-to-person however most people usually see some kind of blackspots that move around in their field of vision.
The most people blackspots nothing to worry about and is a single Black spot in vision doesn’t really affect your quality of life at all. However a small minority may experience an abrupt accumulation of blackspots and this can actually be a sign of more serious underlying problems.
If you or anyone you know suffers from blackspots that have aggressively appeared over the last couple of days or weeks, then I recommend that you seek the expertise of an ophthalmologist immediately.