Flashes and floaters are specks, squiggles, or bright spots in your field of vision. Usually they come and go quickly. They are quite common and usually harmless. Floaters can look like little semi-transparent bugs, stars, threads, or cobwebs. They move when you try to look at them and are most noticeable in bright light.
Flashes look like flashing lights or streaks of lightning.
You may not be able to tell in which eye the flashes occurred. Flashes and floaters can occur at any age. Flashes and floaters result from changes in the vitreous. The vitreous is the gel that fills most of the eyeball. Clumps may form in the vitreous.