REF: http://www.livestrong.com/article/392455-eye-floaters-and-excess-protein/
Causes of Floaters
You may first begin to notice eye floaters in your early 20s, or earlier if you are near-sighted. You can have them in one or both eyes, and they are so-named because they appear to "float" around aimlessly. You cannot focus on them because they move with the eye itself. They are small bits of protein, including pieces of vitreous humor, white blood cells and even blood, according to the University of Illinois. As floaters drift through the vitreous humor, they cast a shadow on the retina, making them appear visible. Eye floaters are most noticeable when you look at the bright sky or a blank white wall.
Treatment
While they certainly can be annoying, for the most part eye floaters are considered a normal part of aging. Although they never completely go away, most will drift down to the bottom of the vitreous humor out of your line of sight, only bothering you occasionally. There is no treatment for the typical eye floaters. In extreme cases, where there are a multitude of floaters interfering with vision, it's possible to have the vitreous humor replaced with a solution of saline. This surgery is very risky and not performed routinely.
