Eye Flashes: Symptoms, Causes, and What to Expect

Q: Eye Flashes: Symptoms, Causes, and What to Expect

Hello Amber： 1. It is more similar to simple floaters. 2. Yes, the duration is variable, usually shorter than that of floaters. 3. Because they are all transparent, it is difficult to identify the interface, and typically, one can only check for signs of teari

Flashes of light in the eyes?

Hello Doctor: I have high myopia and floaters.
1.
In both of my eyes, I experience a sensation of something like a droplet sliding from top to bottom (or bottom to top) in my peripheral vision, occurring about 2-3 times a day.
It's not a black dot, nor is it a strong, brief flash like lightning; it resembles something white or transparent.
This most often happens a few seconds after I close my eyes, and it can also occur when my eyes are open and my eyeballs are still, although less frequently.
Recently, I have noticed this happening just before falling asleep (with a night light on, not complete darkness).
Is this more likely to be a type of simple floaters, or could it indicate vitreous traction on the retina? 2.
For flashes caused by vitreous traction on the retina, do they only disappear once the traction is relieved? How long can this process take at most? Will it last a lifetime like floaters? 3.
In the best-case scenario, if the vitreous and retina successfully separate without any traction, will the doctor be able to confirm their successful separation during a dilated eye exam? Thank you, Dr.
Gao.

Amber, 20~29 year old female. Ask Date: 2016/12/22

Dr. Gao Pilin reply Ophthalmology

Hello Amber: 1.
It is more similar to simple floaters.
2.
Yes, the duration is variable, usually shorter than that of floaters.
3.
Because they are all transparent, it is difficult to identify the interface, and typically, one can only check for signs of tearing.
In Taiwan, at Puzi Hospital's ophthalmology department: Monday to Friday from 8:00 AM to 12:00 PM, and Wednesday afternoon from 1:00 PM to 4:30 PM.
Online responses can only serve as a reference; it is necessary to seek medical attention at a healthcare facility.
I hope to have the opportunity to serve you.
Gao Pilin

Reply Date: 2016/12/22

More Info

Understanding eye flashes can be quite complex, especially for individuals with pre-existing conditions such as high myopia and floaters. Based on your description, it seems you are experiencing visual phenomena that may be related to the vitreous body and its interaction with the retina. Let's break down your concerns into manageable parts.

1. Nature of the Visual Phenomena: The sensation of a droplet-like object moving across your field of vision, especially when your eyes are closed or when you are in a dimly lit environment, could be attributed to several factors. It is possible that this is a manifestation of floaters, which are common in individuals with high myopia. Floaters are tiny clumps of gel or cells that form in the vitreous humor and can cast shadows on the retina, leading to the perception of moving spots or lines. However, the specific description of a droplet-like movement could also suggest a vitreous detachment, where the vitreous gel pulls away from the retina. This is often benign but can sometimes lead to more serious conditions if the retina becomes compromised.

2. Vitreous Detachment and Retinal Health: When discussing vitreous traction on the retina, it is important to understand that this can lead to flashes of light, particularly if the vitreous is pulling on the retina. The flashes you are experiencing may be due to this traction. If the vitreous body is indeed pulling on the retina, the flashes may persist until the vitreous fully detaches, which can take weeks to months. In some cases, the flashes may resolve on their own, but in others, they can continue as long as there is some degree of traction. It is crucial to monitor these symptoms closely, as any increase in frequency or intensity should prompt a visit to an eye care professional.

3. Duration of Symptoms: The duration of flashes resulting from vitreous traction can vary significantly from person to person. In some cases, once the vitreous has completely detached from the retina, the flashes may cease. However, if there is ongoing traction or if a retinal tear occurs, the symptoms may persist or worsen. It is not typical for these flashes to last a lifetime, but they can continue for an extended period if complications arise.

4. Importance of Regular Eye Exams: Regular eye examinations, including dilated fundus exams, are essential for individuals with high myopia and floaters. During these exams, your eye doctor can assess the relationship between the vitreous and retina. If the vitreous and retina are found to be properly separated, this is a reassuring sign. However, if there are signs of traction or potential retinal issues, further intervention may be necessary.

5. When to Seek Help: If you notice any sudden changes in your vision, such as an increase in the frequency of flashes, new floaters, or a curtain-like shadow over your vision, it is imperative to seek immediate medical attention. These could be signs of a retinal tear or detachment, which require prompt treatment to prevent permanent vision loss.

In conclusion, while your symptoms may be related to benign conditions like floaters or vitreous detachment, it is essential to maintain regular check-ups with your eye care provider. They can provide the most accurate assessments and ensure that your retinal health is monitored closely, especially given your history of high myopia. Always prioritize your eye health and do not hesitate to reach out to a professional if you have concerns about changes in your vision.

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