Flashing Lights in the Corner of Right Eye: Causes and Concerns - Ophthalmology

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Flashing lights in the corner of the eye can be a concerning symptom, and it’s understandable that you are seeking clarity on this issue. Based on your description, it appears that you are experiencing visual phenomena that could be attributed to several potential causes, particularly related to the vitreous body of the eye and its interaction with the retina.


Possible Causes of Flashing Lights
1. Vitreous Detachment: As we age, the vitreous gel that fills the eye can begin to shrink and pull away from the retina. This process can cause flashes of light, especially when looking at bright backgrounds, such as a white wall. The shapes you describe, like the "mountain peak" or "horseshoe," may correspond to the way the vitreous is tugging on the retina.

2. Posterior Vitreous Detachment (PVD): This is a common condition where the vitreous gel separates from the retina. While it is often benign, it can sometimes lead to more serious conditions, such as retinal tears or detachment. The presence of flashes, especially if they are new or changing, warrants careful monitoring.

3. Retinal Issues: Although you have had multiple eye examinations with no detected issues, it is important to remain vigilant. Retinal tears or detachments can sometimes present with flashes of light, especially if accompanied by new floaters or shadows in your vision.

4. Migraine Aura: Even if you do not have a history of migraines, some individuals experience visual disturbances known as aura, which can include flashing lights or zigzag patterns. These symptoms can occur without a headache and may be triggered by various factors, including stress or changes in light.

5. Other Causes: Conditions such as dry eyes, excessive screen time, or even fatigue can lead to temporary visual disturbances. However, these are typically less likely to cause persistent flashes.


Recommendations for Management
1. Continued Monitoring: Since you have already consulted with an eye specialist and had your retina examined, it is essential to continue monitoring your symptoms. If the flashes increase in frequency, change in character, or are accompanied by new symptoms (like a sudden increase in floaters or a shadow in your vision), you should seek immediate medical attention.

2. Regular Eye Exams: Given your history of high myopia (nearsightedness), it is crucial to have regular eye exams. High myopia can increase the risk of retinal issues, so staying proactive with your eye health is important.

3. Lifestyle Adjustments: If you find that prolonged screen time exacerbates your symptoms, consider taking regular breaks using the 20-20-20 rule: every 20 minutes, look at something 20 feet away for at least 20 seconds. This can help reduce eye strain.

4. Hydration and Eye Care: Ensure you are adequately hydrated and consider using lubricating eye drops if you experience dryness, especially after extended screen use.

5. Follow-Up with Specialists: If your symptoms persist or worsen, consider seeking a second opinion from a retinal specialist. They may perform additional tests, such as optical coherence tomography (OCT), to assess the health of your retina and vitreous more thoroughly.


Conclusion
In summary, while flashing lights in your vision can be alarming, they are often related to benign conditions like vitreous detachment. However, given your history of high myopia and the persistence of your symptoms, it is essential to remain vigilant and continue regular follow-ups with your eye care provider. Keeping track of any changes in your symptoms will be crucial in ensuring your eye health remains stable. If you have any further concerns or if new symptoms arise, do not hesitate to seek medical advice promptly.