Floaters: Are Black Lines in Your Vision a Sign of Retinal Issues?

Q: Floaters: Are Black Lines in Your Vision a Sign of Retinal Issues?

Hello： Due to your history of high myopia and floaters, the risk of retinal issues may be slightly elevated, especially if you experience symptoms of retinal detachment, such as sudden flashes of light, dark lines, or shadows in your field of vision. <br>Considering this situatio

When looking at the sky, people with floaters may see black lines or flashes?

I have high myopia and also experience floaters.
Recently, when looking at the sky, I sometimes see a sudden flash of a longer black line that quickly disappears.
I would like to know if this could be a sign of retinal detachment or a tear (although my floaters have not increased significantly).
I had an eye exam in May of this year.
Should I seek an immediate examination for this condition?

Niming, 20~29 year old female. Ask Date: 2023/09/28

Dr. Gao Pilin reply Ophthalmology

Hello: Due to your history of high myopia and floaters, the risk of retinal issues may be slightly elevated, especially if you experience symptoms of retinal detachment, such as sudden flashes of light, dark lines, or shadows in your field of vision.
Considering this situation, I recommend that you visit an ophthalmologist as soon as possible for an examination, so that the doctor can assess your eye condition and ensure the health of your retina.

Reply Date: 2023/09/28

More Info

Floaters, or "flying spots," are common visual phenomena that many people experience, particularly as they age or if they have conditions like myopia (nearsightedness). These floaters 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 floaters. However, the sudden appearance of new or different floaters, especially if they are accompanied by flashes of light or changes in vision, can be concerning and may indicate more serious conditions, such as retinal tears or detachment.

In your case, the sudden appearance of a long black line in your vision, especially when looking at the sky, could indeed be a type of floater. However, since you have a history of high myopia, which increases the risk of retinal issues, it is essential to be vigilant. High myopia can lead to degenerative changes in the retina, making it more susceptible to conditions like retinal tears or detachment. While the fact that your floaters have not significantly increased is reassuring, the new symptom you described warrants attention.

Retinal detachment is a serious condition that occurs when the retina separates from the underlying supportive tissue. Symptoms can include the sudden appearance of floaters, flashes of light, and a shadow or curtain over part of your visual field. If you experience any of these symptoms, it is crucial to seek immediate medical attention. Even if your floaters have not increased significantly, the sudden appearance of a new floater, particularly one that is different from what you have experienced before, should prompt a visit to an eye care professional.

Given that you had a vision check in May, it would be wise to schedule another appointment, especially since you are experiencing new visual phenomena. An eye care professional can perform a comprehensive examination, including a dilated fundus exam, to assess the health of your retina and vitreous. They can check for any signs of retinal tears or detachment and provide you with the appropriate guidance based on their findings.

In summary, while floaters are often benign, the sudden appearance of a new floater, particularly in the context of high myopia, should not be ignored. It is advisable to consult with an eye care professional to ensure that your retina is healthy and to rule out any potential issues. Early detection and intervention are key to preventing serious complications, so do not hesitate to seek an evaluation.

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