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While seeing the occasional floater (which may look like a black or gray spot, ring, or web) drift through your field of vision is normal, seeing a sudden increase of them may indicate a problem. If you experience this symptom, you should visit your eye doctor immediately.


Another form of seeing spots is seeing flashes of jagged lines of light. This can occur spontaneously or after head trauma. They typically last from 10 to 20 minutes and can indicate potential retinal detachment.

Related Information From Other Resources


If you suddenly notice spots, floaters or flashes of light, you may be experiencing retinal detachment. A detached retina is a serious condition that occurs when the retina becomes separated from its underlying supportive tissue.

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This is when the vitreous body detaches from the retina. It is typically benign, but can cause a larger floater in vision or an associated retinal tear.

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This condition causes the cornea, the outer layer of the front of your eye, to become deformed and distort vision.

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Corneal dystrophies are a group of genetic eye disorders in which material accumulates in the cornea, sometimes leading to severe vision impairment.

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These are vision problems associated with migraine headaches. Symptoms often include vision loss in one or both eyes lasting less than an hour.

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Disclaimer: The content on is intended for informational purposes only and is not a substitute for professional medical advice. Any decision regarding your eyes and vision should be made in consultation with your eye doctor. Find an eye doctor near you and schedule an appointment if you are experiencing symptoms. If you think you may have a medical emergency, seek medical attention immediately.