Posterior Vitreous Detachment and Retinal Issues: Key Questions Answered

Q: Posterior Vitreous Detachment and Retinal Issues: Key Questions Answered

Hello, Mr. Squirrel： 1-3： Posterior vitreous detachment typically occurs in older individuals. However, it can also happen earlier in those with high myopia, inflammation, or injury. It usually occurs suddenly and is often accompanied by noticeable floaters. I

Regarding issues related to posterior vitreous detachment and retinal disorders?

Hello Doctor:
1.
I have always seen black spots in my vision, and a few days ago, I suddenly experienced very rapid movement of black spots at the lower edges of both eyes.
After about six to seven seconds, my vision returned to normal.
Could this situation possibly be posterior vitreous detachment?
2.
On average, how long do the symptoms of posterior vitreous detachment last?
3.
I have already visited an ophthalmologist and had my pupils dilated, with no signs of retinal tears or detachment.
Is there a need for continued follow-up in the coming weeks?
4.
People often say that retinal tears are accompanied by persistent flashes of light.
I have been confused about the duration of these flashes, which makes me feel like anything passing by me is a flash.
Can these pathological flashes occur just once for a brief moment and then reappear after a few minutes, or do they typically continue to flash for several minutes without stopping, followed by a break and then resume flashing for several more minutes?

Songshu, 20~29 year old female. Ask Date: 2024/03/09

Dr. He Jianxian reply Ophthalmology

Hello, Mr.
Squirrel:
1-3: Posterior vitreous detachment typically occurs in older individuals.
However, it can also happen earlier in those with high myopia, inflammation, or injury.
It usually occurs suddenly and is often accompanied by noticeable floaters.
In such cases, it is generally recommended to undergo a dilated eye examination.
If there are no specific issues, further examination is only necessary if there are changes in symptoms (for example, a sudden increase in floaters or the appearance of flashes or photopsia).

4: What you refer to as "persistent lightning" or traditional photopsia usually appears as brief flashes.
It may reoccur when the eye is moved, but it typically does not present as continuous flashing.

Director He Jianxian, Ophthalmology, Nantou Hospital

Reply Date: 2024/03/09

More Info

Understanding Posterior Vitreous Detachment (PVD) and Retinal Issues: Key Questions Answered
Hello! It’s great that you’re seeking clarity on these important topics regarding your eye health. Let’s address your questions one by one.

1. Could the rapid movement of black dots in your vision indicate Posterior Vitreous Detachment (PVD)?
Yes, the sudden appearance of rapidly moving black dots, often referred to as "floaters," can indeed be associated with PVD. PVD occurs when the vitreous gel that fills the eye begins to shrink and pull away from the retina. This process can lead to the perception of floaters, which are shadows cast by tiny clumps of gel or cells within the vitreous. If you have a history of seeing floaters and have recently experienced a change in their behavior, it’s advisable to consult with an eye care professional for a thorough examination.

2. How long do symptoms of PVD typically last?
The symptoms of PVD can vary significantly from person to person. Some individuals may notice floaters for a few weeks to months as the vitreous continues to change and settle. In many cases, the floaters become less bothersome over time as the brain adapts to their presence. However, if you experience a sudden increase in floaters, flashes of light, or any changes in your vision, it’s crucial to seek immediate medical attention, as these could indicate complications such as retinal tears or detachment.

3. Is there a need for follow-up visits after being examined for retinal tears or detachment?
If you have already been examined by an eye care professional and no retinal tears or detachments were found, the need for follow-up visits depends on your symptoms and the doctor's recommendation. It’s generally a good practice to have a follow-up appointment if you notice any new symptoms or if your floaters change significantly. Regular monitoring is essential, especially in the context of PVD, to ensure that no complications arise.

4. What is the nature of the "flashes" associated with retinal tears?
The flashes of light that people often describe in relation to retinal issues can vary in their presentation. They may appear as brief, bright flashes that last for a fraction of a second, or they can occur in clusters. These flashes are typically caused by the vitreous pulling on the retina, which can stimulate the retinal cells and create the sensation of light. In some cases, these flashes may be intermittent, appearing sporadically over a period of time, rather than being continuous. If you experience persistent or frequent flashes, it’s important to have a comprehensive eye examination to rule out any serious conditions.

In summary, while PVD can lead to the symptoms you’re experiencing, it’s essential to remain vigilant and consult with an eye care professional if you notice any changes in your vision. Regular check-ups are crucial for monitoring your eye health, especially given the potential risks associated with retinal issues. If you have any further questions or concerns, don’t hesitate to reach out to your healthcare provider for personalized advice and care. Your vision is invaluable, and taking proactive steps to maintain it is always a wise choice.

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