Flashing Black Spots in Your Vision: Causes and When to See an Eye Doctor

Q: Flashing Black Spots in Your Vision: Causes and When to See an Eye Doctor

Hello： Based on your description, you may be experiencing symptoms of floaters, which are typically described as black dots, lines, or spirals that flicker or move within your field of vision. <br>Floaters are usually caused by the gradual liquefaction of the transparent gel-like

Flashing black spots in the field of vision?

Hello Doctor, I would like to inquire about a symptom I experience.
When I forcefully close my eyes and then open them (such as when washing my hair or yawning), I see black spots flickering and floating in my visual field, as if there are a bunch of black bugs in front of me.
Although this condition has persisted for several years, it usually resolves within about 1 to 2 seconds, and I do not experience dizziness or eye pain, so I haven't paid much attention to it.
Could this be a symptom of floaters? Is it necessary for me to see an ophthalmologist? Thank you for taking the time to respond.

Ye Xiansheng, 30~39 year old female. Ask Date: 2023/02/26

Dr. Gao Pilin reply Ophthalmology

Hello: Based on your description, you may be experiencing symptoms of floaters, which are typically described as black dots, lines, or spirals that flicker or move within your field of vision.
Floaters are usually caused by the gradual liquefaction of the transparent gel-like substance inside the eye (vitreous), leading to the formation of spots or line-like structures.
These spots or lines may move or flicker for a short period but typically do not cause long-term effects on vision.
While most floaters are harmless, in some rare cases, they may be a precursor to serious issues such as retinal detachment.
Therefore, if you notice any sudden or frequently occurring visual disturbances, it is best to see an ophthalmologist for an examination to determine if further treatment is necessary.
In summary, if your floaters have been persistent for several years but return to normal after about 1-2 seconds and there are no other vision problems or discomfort, regular eye examinations can help ensure your eye health.
However, if you notice any sudden or frequently occurring visual anomalies, you should seek medical attention promptly.

Reply Date: 2023/02/26

More Info

The symptoms you are describing—seeing flashing black spots or "floaters" in your vision, especially after activities like closing your eyes tightly or yawning—are indeed commonly associated with a condition known as "floaters" or "vitreous floaters." These are typically caused by changes in the vitreous humor, the gel-like substance that fills the eye. As we age, the vitreous can become more liquid and may pull away from the retina, leading to the perception of these floaters.
In your case, the fact that these symptoms last only for a second or two and do not accompany any pain or dizziness is reassuring. However, it is essential to understand that while floaters are often benign, they can sometimes indicate more serious conditions, especially if there is a sudden increase in their frequency or if they are accompanied by flashes of light or a shadow in your peripheral vision. These could be signs of retinal detachment or other retinal issues, which require immediate medical attention.

When you exert pressure on your eyes, such as when yawning or washing your hair, you might be temporarily altering the shape of the vitreous or the pressure within the eye, which could lead to the transient visual disturbances you are experiencing. This phenomenon is not uncommon, and many people with floaters report similar experiences, particularly during activities that involve eye strain or pressure changes.

While your symptoms have been stable for several years, it is always a good idea to consult with an eye care professional if you notice any changes in your vision. An eye doctor can perform a comprehensive eye examination, including a dilated fundus exam, to assess the health of your retina and vitreous. They can determine whether your symptoms are indeed benign floaters or if there are any underlying issues that need to be addressed.

In summary, while your symptoms may be related to floaters, it is crucial to monitor any changes in your vision. If you experience a sudden increase in floaters, flashes of light, or any other significant changes, seek medical attention promptly. Regular eye exams are essential, especially as you age or if you have a history of eye problems, to ensure that any potential issues are caught early and managed appropriately.

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