What makes floaters?

Shadows: Floaters are the shadows cast onto the retina by particles in the vitreous humor. The vitreous is a gel-like substance that takes up most of the inside of the eye. At birth, it is relatively uniform and solid. Throughout life, it breaks down into liquid and contracts. As this process occurs, particles form in the vitreous. These particles cast shadows onto the retina which we perceive as floaters.

Floaters: A posterior vitreous detachment causes floaters. This is a situation where the vitreous(jelly) of the eye detaches (not a retinal detachment), it then "crumples" up leaving dots, spots, strands of blurry vitreous; i.e. The "floater". You should have an exam to ensure the incident did not tear the retina, which could lead to a retinal detachment. Wait one year then consider surgery.