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What are floaters?
Floaters are dark dots, lines or particles that many people notice moving around in their vision as though floating in the eye. Floaters cast shadows on the retina, the light-sensitive tissue lining the inside of the back of the eye. The retina then sends visual signals to the brain, resulting in a visual image. Floaters come and go with eye movements, such as blinking. They follow eye movements, but lag behind and float to a halt shortly after the eyes stop moving. These images are most obvious when looking at a bright, uniform field of vision, such as a white wall or a clear sky. People may experience one or several floaters in one or both eyes. Floaters are not the same as the spots you see after looking at intense light such as the light from a flashbulb.

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