What you are describing is called Scheerer's Phenomenon. I have this too. I felt that this became a major issue for me after I contracted Lyme disease. I remember seeing these little flitting things if I looked at the blue sky. Now I can see them very clearly when I look at any light colored object. It is pretty annoying.
If you look it up on line you will see that it is supposedly normal, but I feel like mine is worse since I became ill.
I will be curious to see if anything takes it away. So far nothing has worked.