eyes are delicate and very easy to damage. A hard blow is not necessary to cause eye injury. In fact, all it takes is a tiny sliver or speck of metal, a particle of dust, or trace of chemical to do a great deal of damage to your eyes.
Floaters often appear as pieces of lint, dots, or circles that float around and are seen best with an azure blue sky, eyes floaters usually look gray or white also may move or remain in one place.