Floaters are the name for these small dark shapes that appear before your eyes floating through your field of vision. They are clumps of protein. They look like dots, squiggles, strands or any of a hundred other shapes. Though annoying, floaters are harmless, and there are ways to prevent them through proper diet.
Warning: If you suddenly notice new spots in your vision, see your eye doctor right away to rule out serious problems. A sudden increase of floaters can be an indication of a vitreous or retinal detachment. People who are very nearsighted and/or diabetic are particularly prone to floaters and retinal tears. If you suddenly see new floaters, make an appointment with your eye doctor immediately.
The Causes of Floaters:
Floaters are usually the result of bits of cells that remain in the vitreous humor after birth and float around when the vitreous becomes more liquified later in life. It is reported that over 50% of people over 70 years of age report seeing floaters.