Flashing Lights in Vision: When to Seek Eye Care - Ophthalmology

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Flashes of light in the eyes that resemble a broken light bulb?


Hello Doctor: I do not have myopia.
Since February, I have occasionally experienced a sensation of a light bulb flickering at the top of my head, with each occurrence lasting briefly.
Sometimes it happens five or six times in a day.
Is this what is referred to as photopsia? I underwent an OCT scan at a major hospital, and the doctor mentioned that although I do not have myopia, my retina is relatively thin.
Over the past few months, I have had several dilated eye examinations, and there were no tears found.
I would like to ask the doctor: 1.
Should I seek medical attention every time I experience these flashes, or is there a specific number of occurrences or frequency, or the presence of floaters that would necessitate an examination? I have been frequently visiting the ophthalmologist lately, and I feel quite exhausted, but I also feel anxious if I do not get checked.
2.
Will the flashes eventually subside after some time? Thank you for taking the time to respond, Doctor.

Ivy, 30~39 year old female. Ask Date: 2024/06/14

Dr. Gao Pilin reply Ophthalmology


Hello: The situation you described is likely related to photopsia.
Photopsia is typically caused by traction or stimulation of the retina, and it is more common in individuals with thinner retinas.
Here are detailed answers to the issues you mentioned:
1.
Should you seek medical attention every time flashes occur? Occasional photopsia does not necessarily require immediate medical attention each time, but if the frequency increases or is accompanied by other symptoms (such as floaters, vision loss, or visual field defects), you should seek medical care promptly.
Given your existing condition of having a thinner retina, you should pay special attention in the following situations:
- A significant increase in the frequency of flashes.
- The emergence of new floaters, especially if they occur in large numbers.
- Sudden vision loss or visual field defects.

These conditions may indicate more serious issues with the retina, such as retinal tears or detachment, which require timely intervention.
2.
Do flashes disappear after a while? Photopsia may persist for a period of time but does not necessarily disappear completely.
Some individuals may experience flashes for several days, weeks, or even longer.
Generally, if they occur only occasionally and without other symptoms, there is no need for excessive concern.
However, if the flashes persist for too long or occur too frequently, it is advisable to have regular eye examinations.
You have undergone several dilated eye exams, and the doctor has confirmed that there are no retinal holes, which is good news.
Nevertheless, ongoing regular check-ups are necessary for individuals with retinal thinning issues to detect and address any potential problems early.
If you feel stressed about frequent visits, you can discuss with your ophthalmologist to see if a reasonable examination frequency can be established based on your situation.
This way, you can ensure your eye health while reducing unnecessary anxiety and stress.

Reply Date: 2024/06/14

More Info


Flashing lights in vision, often referred to as "photopsia," can be a concerning symptom for many individuals. Your description of experiencing intermittent flashes, akin to a flickering light bulb, aligns with this phenomenon. Given your history of having a thinner retina, it is essential to understand the implications of these flashes and when to seek medical attention.

1. When to Seek Medical Attention:
It is not necessary to rush to the doctor every time you experience a flash of light. However, certain conditions warrant immediate medical evaluation. You should consider seeking care if:
- The frequency of the flashes increases significantly.

- You begin to notice new floaters (often described as "cobwebs" or "shadows" in your vision).

- You experience any sudden changes in your vision, such as a decrease in visual acuity or a loss of peripheral vision.

- The flashes are accompanied by other symptoms like pain or significant discomfort.

Since you have undergone several dilated eye exams and OCT scans without any signs of retinal tears or detachments, this is reassuring. However, the fact that your retina is thinner means you should remain vigilant. Regular follow-ups with your eye care provider are advisable, especially if your symptoms change or worsen. It is understandable to feel anxious about frequent visits, but maintaining a proactive approach to your eye health is crucial.

2. Duration of Flashes:
Flashes of light can vary in duration and frequency. Some individuals may experience them sporadically, while others might notice them more consistently over time. In many cases, these flashes may diminish or even resolve as the underlying cause stabilizes. However, for some, they may persist for longer periods. If the flashes are not accompanied by other concerning symptoms, they may not indicate a serious issue.
It's also worth noting that flashes can sometimes be related to the vitreous gel in the eye pulling away from the retina, a common occurrence as we age. This process can lead to temporary visual disturbances but does not always signify a serious problem.
In summary, while occasional flashes of light can be benign, your specific situation—particularly with a thinner retina—requires careful monitoring. It is essential to maintain open communication with your eye care professional about your symptoms and any changes you notice. They can help determine the appropriate frequency for follow-up examinations based on your individual risk factors and symptoms.
If you find yourself feeling overwhelmed by the frequency of your visits, consider discussing your concerns with your eye doctor. They may be able to provide reassurance or adjust your follow-up schedule based on your current condition. Remember, prioritizing your eye health is vital, and addressing your concerns with a professional can help alleviate anxiety while ensuring your vision remains protected.

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