Flashing Lights in Closed Eyes: Possible Causes and Solutions - Ophthalmology

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Flashing lights or visual disturbances when closing your eyes can be concerning, especially when accompanied by other symptoms like dark spots or changes in vision. Based on the information you've provided and the context of similar cases, there are several potential causes for your experience, as well as some recommendations for managing the situation.


Possible Causes:
1. Vitreous Detachment: One common cause of flashing lights is the pulling or tugging of the vitreous gel inside the eye on the retina. This can happen as we age or due to myopia (nearsightedness), which you mentioned you have. When the vitreous pulls away from the retina, it can create the sensation of flashes of light, especially in low-light conditions.

2. Retinal Issues: While you mentioned that your vision hasn't changed significantly, it's important to consider that flashes can sometimes indicate more serious conditions, such as retinal tears or detachments. These conditions can lead to permanent vision loss if not treated promptly. The presence of dark spots or shadows in your vision could also suggest issues related to the retina.

3. Migraine Aura: Some individuals experience visual disturbances, including flashes of light or dark spots, as part of a migraine aura, even without a headache. This can occur in the absence of typical migraine symptoms and may be triggered by fatigue or stress.

4. Eye Fatigue: Prolonged periods of eye strain, especially from screen time or focusing on close objects, can lead to temporary visual disturbances. This is often accompanied by symptoms like dry eyes or discomfort.

5. Optical Illusions: Sometimes, the brain can create visual sensations based on the lack of light or the way the eyes are positioned. This can lead to seeing flashes or spots when the eyes are closed, particularly in a dark environment.


Recommendations:
1. Eye Examination: Since you have a history of myopia and are experiencing these symptoms, it's crucial to have a comprehensive eye examination by an ophthalmologist. They can perform tests to check for retinal health, vitreous changes, and other potential issues.

2. Monitor Symptoms: Keep a diary of your symptoms, noting when they occur, their duration, and any associated factors (like fatigue or stress). This information can be helpful for your doctor.

3. Rest Your Eyes: If you suspect that eye fatigue is contributing to your symptoms, make sure to take regular breaks from screens and practice the 20-20-20 rule: every 20 minutes, look at something 20 feet away for at least 20 seconds.

4. Stay Hydrated and Maintain Eye Health: Ensure you are drinking enough water and consider using artificial tears if you experience dryness. A balanced diet rich in vitamins A, C, and E, as well as omega-3 fatty acids, can support eye health.

5. Follow Up: If your symptoms worsen, such as an increase in the frequency or intensity of flashes, or if you notice a sudden increase in floaters or a curtain-like shadow in your vision, seek immediate medical attention.

In conclusion, while flashing lights and dark spots can be benign, they can also indicate more serious conditions, especially in individuals with myopia. A thorough examination by an eye care professional is essential to rule out any significant issues and to provide you with peace of mind.