Floaters and Flashes

What are Floaters?

Floaters are cellular debris that may be seen as strings, clouds, dots, dust or spider webs in the patient's vision. These objects appear to be in front of the eye, but they are actually floating inside. What the patient sees are the shadows these objects cast on the retina. They are often noticed in nearsighted individuals and people who have had recent eye surgery. Floaters are observed most when the patient is reading or looking at a blank surface. They sometimes fade slowly over time, but one possible remedy is to move the eyes up and down when a new floater appears. This movement may cause the vitreous fluid to shift, allowing the floater to move out of the line of vision.

What are Flashes?

Flashes are caused when the vitreous gel (the clear jelly-like fluid that fills the inside of the eye) rubs against or pulls on the retina creating the illusion of flashing lights. They might be described as a sparkle, lightening, or sparks. The experience is similar to the illusion of seeing stars after being hit in the eye. Flashes are usually noticed at night or in a dark room. They are caused by any abnormal stimulus to the retina.

What else should I know about Floaters and Flashes?

Both floaters and flashes are common visual symptoms. They are often a result of normal changes within an aging eye. Sometimes, however, they are caused by the onset of an eye disease that could lead to vision loss, if not treated. It is always a good idea to consult your eye care specialist when these types of vision changes occur.