Floaters can have different shapes and can appear as dots, circles, wiggly lines, clouds or cobwebs.
Floaters are actually tiny clumps of gel or cells in the clear jelly-like fluid inside your eye, called the vitreous. If you see floaters in your eye, what you are actually seeing are the shadows they cast on your retina, which is the nerve layer at the back of the eye that senses light and allows you to see. The appearance of floaters can be alarming, especially if they develop suddenly, but are actually quite common. When people reach middle age, the vitreous gel, which fills the eye, may start to thicken or shrink. Floaters can be caused by the vitreous gel pulling away from the back of the eye.