Do you have eye floaters? Eye floaters little specks of debris floating through the vitreous fluid in the eyeball. Sometimes people may momentarily confuse them with dust or tiny insects floating across in front of the eye. However, they are within the eyeball and are not eliminated by rubbing the front of the eye.
I have one in my right eye. I see it, but I'm so used to it that I don't really notice it that much. Some people might have tons of floaters on their eyes. People with bad vision might have this.
Occasionally. Be careful of them if they stay still though. If they move when you move your eyes, you're fine, but if you notice a spot that doesn't move, that can be serious.
Yes. And now that you mentioned it I'm noticing some in my eyes right now I think I just get used to them being there and eventually not notice them at all anymore.