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

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Flashing lights around 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 the periphery of your vision, particularly in the left eye, during bouts of coughing. This phenomenon can be attributed to several potential causes, especially in the context of your existing conditions, such as myopia (nearsightedness) and floaters.


Possible Causes
1. Vitreous Detachment: In individuals with myopia, the vitreous gel inside the eye can become more liquefied and may pull away from the retina, leading to flashes of light. This is often more noticeable during physical exertion, such as coughing, which can create a sudden increase in intraocular pressure.

2. Retinal Issues: Although you mentioned that your retina was checked two years ago and no tears were found, it is important to note that retinal conditions can develop over time. Flashes of light can indicate that the retina is being stimulated or pulled, which could lead to more serious conditions like retinal tears or detachment.

3. Increased Intracranial Pressure: Coughing can lead to transient increases in intracranial pressure, which may affect the optic nerve and lead to visual disturbances, including flashes of light.

4. Migraine Aura: Some individuals experience visual disturbances, such as flashing lights, as part of a migraine aura, even if they do not have a history of migraines. This can occur independently of headache pain.

5. Ocular Fatigue or Strain: Given your history of floaters and myopia, prolonged screen time or strain on your eyes, especially during illness, can exacerbate visual symptoms.

When to Seek Medical Attention
While occasional flashes of light may not be alarming, the following situations warrant immediate medical evaluation:
- Increased Frequency or Intensity: If the flashes become more frequent or intense, it is crucial to seek an eye examination.

- Accompanied by Other Symptoms: If you experience additional symptoms such as a sudden increase in floaters, a shadow or curtain effect in your vision, or significant vision loss, you should seek emergency care.

- Persistent Symptoms: If the flashes persist beyond the coughing episodes or do not resolve, it is advisable to consult an eye care professional.


Recommendations
1. Monitor Symptoms: Keep track of when the flashes occur, their duration, and any associated symptoms. This information can be helpful for your healthcare provider.

2. Limit Eye Strain: Ensure you take regular breaks from screens and avoid straining your eyes, especially during your recovery from COVID-19.

3. Consult an Eye Specialist: If your symptoms persist or worsen, consider scheduling an appointment with an ophthalmologist for a comprehensive eye examination, including a dilated fundus exam to assess the retina and vitreous.

4. Stay Hydrated and Rest: During your recovery from COVID-19, ensure you stay hydrated and get adequate rest, as overall health can impact eye health.

In conclusion, while the flashes of light you are experiencing may be related to your existing eye conditions and the physical exertion of coughing, it is essential to remain vigilant. If you notice any changes or worsening of your symptoms, do not hesitate to seek professional medical advice. Your eye health is crucial, and timely intervention can prevent potential complications.