Flashing Lights in Eyes When Coughing: Causes and Concerns - Ophthalmology

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Flashing lights in the eyes, especially when accompanied by coughing, can be concerning and warrants careful consideration. Based on your description, it seems that you are experiencing flashes of light in your peripheral vision, particularly in the left eye, during episodes of coughing. This phenomenon can be attributed to several potential causes, and it is essential to understand these in the context of your existing eye conditions, such as myopia and floaters.


Possible Causes of Flashing Lights
1. Vitreous Detachment: In individuals with myopia, the vitreous gel that fills the eye can become more liquid and may pull away from the retina. This can lead to flashes of light, especially during physical exertion or sudden movements, such as coughing. The flashes are typically brief and may be accompanied by floaters.

2. Retinal Issues: Although you mentioned that your retina was checked and found to be healthy, it is important to note that changes can occur over time. Flashes of light can sometimes indicate retinal tears or detachments, particularly if they are new or accompanied by other symptoms like a sudden increase in floaters or a shadow in your vision.

3. Increased Intracranial Pressure: Coughing can increase pressure in the head and eyes, which might lead to temporary visual disturbances, including flashes of light. This is generally benign but can be exacerbated by underlying conditions.

4. Ocular Migraine: Some individuals experience visual disturbances, including flashes of light, as part of an ocular migraine, even without a headache. This can occur independently of other symptoms and may be triggered by various factors, including stress or physical exertion.


When to Seek Medical Attention
While occasional flashes of light may not be a cause for alarm, it is crucial to monitor the situation closely. Here are some guidelines on when to seek medical attention:
- New Symptoms: If the flashes of light are a new symptom for you, especially if they occur frequently or increase in intensity.

- Accompanying Symptoms: If you experience other symptoms such as a sudden increase in floaters, a shadow or curtain effect in your vision, or any significant changes in your vision.

- Persistent Symptoms: If the flashes do not resolve or if they become more frequent, it is advisable to consult an eye care professional.


Recommendations for Management
1. Rest Your Eyes: Given that you are currently dealing with COVID-19 and experiencing coughing, it is essential to rest your eyes and avoid straining them. Limit screen time and take regular breaks.

2. Stay Hydrated: Ensure you are drinking enough fluids, as dehydration can exacerbate visual disturbances.

3. Monitor Symptoms: Keep a log of when the flashes occur, their duration, and any accompanying symptoms. This information can be helpful for your healthcare provider.

4. Telehealth Consultation: If you are unable to visit an eye doctor in person, consider a telehealth consultation. Many eye care professionals can provide guidance based on your symptoms and history.

5. Follow-Up: Once you are feeling better and can safely visit a healthcare provider, consider scheduling a follow-up eye exam to reassess your retinal health, especially given your history of myopia and floaters.


Conclusion
In summary, while flashing lights in your eyes during coughing can be concerning, they are not always indicative of a serious problem. However, given your history of myopia and floaters, it is essential to remain vigilant and seek medical advice if your symptoms change or worsen. Prioritize your health and well-being, and do not hesitate to reach out to a healthcare professional for further evaluation.