Eye Flashes: When to Seek Medical Attention - Ophthalmology

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Flashes of light in the eyes?


Hello, doctor.
I previously noticed that I experience flashes of light when I close my eyes.
When I went to the hospital for an examination, the doctor advised me to monitor it and return if the flashes occur too frequently.
However, I am unsure what "too frequent" means.
Could you please clarify how often flashes should occur to be considered normal? (I experience them 1-2 times a day).
Thank you, doctor.

Xiao Cao, 10~19 year old female. Ask Date: 2021/09/20

Dr. Gao Pilin reply Ophthalmology


Hello, Xiaocao: It should be fine to have bowel movements once or twice a day, but if it occurs several times an hour, it would be necessary to get it checked.

Reply Date: 2021/09/20

More Info


When it comes to experiencing eye flashes, it is essential to understand the underlying causes and when to seek medical attention. Eye flashes can be a common occurrence, especially among individuals with certain eye conditions, such as myopia (nearsightedness) or floaters. However, the frequency and nature of these flashes can provide important clues about whether further evaluation is necessary.

Based on your description of experiencing flashes 1-2 times a day, this could be within the realm of normal, especially if these flashes are brief and not accompanied by other concerning symptoms. Flashes can occur due to the vitreous gel in the eye pulling away from the retina, a process known as vitreous detachment. This is often benign and more common in individuals who are nearsighted or older. However, it is crucial to monitor the situation closely.

Medical professionals often advise patients to seek immediate attention if they experience the following:
1. Increased Frequency: If you notice a sudden increase in the number of flashes, especially if they become more frequent than your usual 1-2 times a day, this could indicate a potential issue that needs to be evaluated.

2. Accompanied Symptoms: If the flashes are accompanied by other symptoms such as a sudden increase in floaters, a shadow or curtain effect in your vision, or a significant decrease in vision, these could be signs of retinal detachment or other serious conditions that require urgent care.

3. Duration and Intensity: If the flashes last longer than a few seconds or are particularly intense, it is advisable to consult an eye care professional.
4. Changes in Vision: Any changes in your overall vision, such as blurriness or distortion, should prompt a visit to an eye doctor.

In your case, since you have already been evaluated by a doctor who advised you to monitor the situation, it is important to keep track of any changes. If your flashes remain at 1-2 times a day and do not change in nature, this may be considered normal. However, if you start to notice any of the concerning symptoms mentioned above, it would be prudent to return to your eye care provider for further evaluation.

In addition to monitoring your symptoms, consider the following general eye care tips to maintain your eye health:
- Regular Eye Exams: Ensure that you have regular check-ups with your eye doctor, especially if you have a history of eye conditions like myopia or floaters. Regular exams can help catch any potential issues early.

- Protect Your Eyes: Use sunglasses that block UV rays when outdoors, and take breaks from screens to reduce eye strain.

- Stay Hydrated: Proper hydration can help maintain eye moisture and overall health.

- Healthy Diet: A diet rich in antioxidants, omega-3 fatty acids, and vitamins can support eye health. Foods like leafy greens, fish, nuts, and fruits are beneficial.

In summary, while experiencing eye flashes can be normal, it is essential to be vigilant about any changes in frequency or accompanying symptoms. If you have any doubts or concerns, do not hesitate to reach out to your eye care provider for guidance. Your vision is invaluable, and maintaining open communication with your healthcare provider is key to ensuring your eye health.

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