Eye twitching?
Sometimes the eyes may experience a brief flash, similar to a flickering light or a camera shutter.
What could be the cause of this?
Mr. Zhou, 30~39 year old female. Ask Date: 2022/02/25
Dr. He Jianxian reply Ophthalmology
If there is a sudden change in vision to brightness, it is important to be cautious about the possibility of a blood clot.
It is recommended to consult a cardiologist to arrange for echocardiography of the heart and carotid arteries.
Director He Jian-xian, Ophthalmology Department, Nantou Hospital.
Reply Date: 2022/02/25
More Info
Eye flashes, often described as brief bursts of light or flickering sensations in the visual field, can be concerning and may arise from various underlying causes. Understanding these causes is crucial for determining when to seek medical attention.
Common Causes of Eye Flashes
1. Vitreous Detachment: As we age, the vitreous gel that fills the eye can shrink and pull away from the retina. This process can lead to flashes of light, especially when the vitreous tugs on the retina. This is often harmless but can sometimes indicate a more serious condition.
2. Retinal Issues: Flashes can also be a sign of retinal problems, such as retinal tears or detachments. These conditions can lead to significant vision loss if not treated promptly. Symptoms may include seeing flashes of light, especially in peripheral vision, along with floaters or a shadow over the visual field.
3. Migraine Auras: Some individuals experience visual disturbances, including flashes of light, as part of a migraine aura, even if they do not have a history of migraines. These flashes can occur before or during a headache and usually resolve within 30 minutes to an hour.
4. Ocular Migraines: Similar to migraine auras, ocular migraines can cause temporary visual disturbances, including flashes of light, without the headache component. These are typically brief and resolve on their own.
5. Optical Illusions: Sometimes, flashes can be triggered by sudden changes in lighting, such as moving from a bright environment to a darker one. This can cause temporary visual disturbances as the eyes adjust.
6. Eye Strain: Prolonged periods of focusing on screens or reading can lead to eye fatigue, which may manifest as flashes or flickering sensations. This is often accompanied by other symptoms like dryness or discomfort.
7. Other Medical Conditions: Certain systemic conditions, such as hypertension or diabetes, can also affect vision and lead to symptoms like flashes. In these cases, managing the underlying condition is essential.
When to Seek Help
While occasional flashes may not be a cause for alarm, there are specific situations where you should seek medical attention:
- Sudden Onset: If you experience a sudden increase in flashes or floaters, especially if accompanied by a shadow or curtain effect in your vision, you should see an eye care professional immediately. This could indicate a retinal tear or detachment.
- Persistent Symptoms: If flashes persist over several days or weeks, or if they worsen, it’s important to have a comprehensive eye examination.
- Accompanying Symptoms: If flashes are accompanied by other symptoms such as significant vision loss, severe headaches, or changes in your overall health, seek medical attention promptly.
Conclusion
In summary, eye flashes can be caused by a variety of factors, ranging from benign to serious conditions. Understanding these causes can help you determine when to seek medical advice. Regular eye exams are essential, especially as you age or if you have underlying health conditions. If you notice any sudden changes in your vision, do not hesitate to consult an eye care professional for a thorough evaluation. Early detection and treatment of potential issues can significantly improve outcomes and preserve your vision.
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Hello, it is recommended to seek medical examination. Wishing you safety and health. Sincerely, Dr. Tsai Wen-Yuan, Director of the Department of Ophthalmology, Taoyuan Hospital, Ministry of Health and Welfare.[Read More] Understanding Eye Flashes: Causes and When to Seek Help
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