You probably don’t need to treat photopsias that are unrelated to a more serious condition. But this is a decision you need to make with your eye care provider after an eye examination and discussion of your symptoms.

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These flashes are visual disturbances that occur because of something happening in your eyes or your brain. Phosphenes is the medical name for flashes of light that don’t happen because of actual light sources.

Flashes of light you see even when you’re not looking at light have a medical name — photopsias. They’re kind of like eye floaters, which have a medical name, too — myodesopsias.

For many people, flashes will happen more often early in the morning than later in the day. They might also happen when you’re in a dark room or outside in the dark. You might wake up seeing flashes of bright light that then fade as the day continues. Sometimes, flashes can occur with head, eye or body movement, especially in a dark room.

Occasional eye flashes are common and can be part of the natural aging process. However, they can also be a sign of other conditions, including:

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Sometimes it can help to start a journal when you first experience a medical problem. Write down everything you saw and details like how long it lasted. This can be a helpful tool when you go into your provider’s office for an appointment.

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You can experience floaters and flashes together or on their own. Both floaters and flashes happen when the vitreous or vitreous humor pulls on the retina, creating tension. You can also see flashes in one eye or both eyes.

If you have any sudden loss of vision or extreme pain in your eye, you should call your eye care provider or get emergency medical help. This is true with or without eye flashes.

Having visual disturbances like photopsias can sometimes be alarming. Floaters and flashes are typically harmless, but they can easily be confused with other vision changes, like large spots in your vision. These symptoms can be signs of other medical conditions, like:

During an appointment to diagnose eye flashes, your eye care provider will want to get as many details as possible about what you’ve been seeing. This is part of the diagnosis process and helps your provider figure out what’s going on with your vision. The more detail you can provide, the better. Some questions your provider may ask include:

Contact your eye care provider about any change in vision, including an increased number of eye flashes, especially if you have additional signs or symptoms of illness.

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You probably can’t prevent photopsias from happening. However, you can help by caring for your overall health and your eye health. Some tips include:

The flashes of light you may see in your eyes are most likely to be white or sparkly, but colored lights happen, too. The flashes can take many shapes, including:

Photopsia is a medical term for a visual disturbance that happens when you see light without looking at a light. While other medical conditions aren’t always the cause of flashes, it’s best to err on the side of caution and contact an eye care provider. They’ll be able to diagnose any issues and advise you on treatment.

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Your provider will treat a photopsia by treating its cause. Some causes, like retinal detachments, brain injuries or eye injuries, are medical emergencies. With retinal detachment, you might notice darkened side vision along with eye flashes and floaters. Get help right away if you’ve had a brain or eye injury or think you might have retinal detachment.

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A photopsia is a visual disturbance, a flash of light that happens without a light source. You may see sparkles or shapes like lightning bolts. It can be nothing, or it can be a symptom of another condition.