Flashing Lights and Visual Disturbances After Waking Up

Experiencing flashes of light in vision, especially upon waking, can be indicative of various conditions. It may be related to visual disturbances such as photopsia or could be a symptom of a more serious issue like retinal detachment or migraine aura. It is advisable to consult an eye care professional for a thorough evaluation?

Hello Doctor, about a month ago, I often woke up and felt a lot of strain and fatigue in my right eye shortly after using it.
I also felt that my vision in the right eye had deteriorated.
Later, I went to an ophthalmologist who informed me that my right eye's prescription had increased by 150 degrees.
Additionally, I experienced what seemed like flashes of light, so I mentioned this to the doctor, who examined my retina and said everything looked fine (both the clinic and the hospital confirmed that my retina was healthy).
After that, during the New Year, I got a new pair of glasses, and since then, the strain in my right eye has improved significantly.
However, in the past few days, I have noticed flashes or bright spots when I move my eyes, especially at the edges of my visual field.
This occurs particularly when I turn my eyes quickly, especially in low light when I am about to sleep.
I also experience this when I close my eyes and move my eyes.
Additionally, when I wake up from my afternoon nap, I feel like things flash quickly (similar to the flickering effect of old black-and-white films).
However, this flickering sensation has improved over the past few days.

1.
Are the flashes and the flickering sensation after my nap normal, or could they be related to my high myopia (1100/1250)? Should I go back to the ophthalmologist to check my retina again?
2.
Can I still perform eye exercises?
3.
Is it okay to sleep on my side at night? Can I sleep on my stomach during my afternoon nap? Thank you for your response.

Bo, 20~29 year old female. Ask Date: 2016/02/19

Dr. He Jianxian reply Ophthalmology

1.
The visual phenomenon you are experiencing, referred to as "photopsia," should be evaluated by an ophthalmologist if there is an increase in frequency.
2.
Rapid eye movements or actions that apply pressure to the eyes are not recommended.
3.
When calling out, try to avoid applying pressure to the eyes; the posture is not restricted.

Reply Date: 2016/02/19

More Info

Flashing lights and visual disturbances, especially after waking up, can be concerning symptoms, particularly for individuals with high myopia (nearsightedness) like yourself. Given your history of significant refractive error and recent visual changes, it’s essential to understand the potential causes and implications of these symptoms.

1. Understanding Flashing Lights and Visual Disturbances: The flashing lights you describe, particularly when moving your eyes or after waking up, may be related to several factors. In high myopia, the structure of the eye can change, leading to conditions such as vitreous detachment or retinal issues. The vitreous gel, which fills the eye, can pull on the retina, causing sensations of flashes or light. This is often referred to as "photopsia." The fact that these flashes occur more frequently when you move your eyes quickly or in low light conditions is not uncommon. It could also be related to the adaptation of your eyes to different light levels, especially after being in a dark environment.

2. Normalcy of Symptoms: While occasional flashes of light can be a normal phenomenon, especially in individuals with high myopia, it is crucial to monitor these symptoms closely. If the flashes are persistent, increase in frequency, or are accompanied by other symptoms such as a curtain-like shadow over your vision or a sudden increase in floaters, it is essential to seek immediate medical attention. Your previous eye examinations indicated that your retina appeared healthy, which is reassuring, but given the new symptoms, a follow-up examination may be warranted to rule out any potential issues.

3. Eye Movements and Sleep Positions: Regarding your questions about eye movements and sleep positions, it is generally safe to perform eye exercises and movements unless advised otherwise by your eye care professional. However, if you experience discomfort or increased flashes during these movements, it may be wise to limit them until you can consult with your doctor. As for sleeping positions, side sleeping is typically fine, but if you notice discomfort or increased visual disturbances when sleeping on one side, you might want to adjust your position. Similarly, if you find that napping face down (prone position) exacerbates your symptoms, it may be best to avoid that position.

4. Importance of Regular Eye Exams: Given your high myopia and the recent changes in your vision, regular eye examinations are crucial. These exams can help monitor the health of your retina and vitreous, especially since individuals with high myopia are at a higher risk for retinal detachment and other complications. If you have not had a comprehensive dilated eye exam recently, it would be prudent to schedule one. This will allow your eye doctor to thoroughly assess the retina and vitreous for any signs of detachment or other issues.

5. Lifestyle Considerations: To help manage your symptoms, consider taking regular breaks during activities that require prolonged focus, such as reading or using screens. The 20-20-20 rule is beneficial: every 20 minutes, look at something 20 feet away for at least 20 seconds. Additionally, maintaining good hydration and ensuring adequate lighting while reading or working can help reduce eye strain.

In conclusion, while some visual disturbances can be normal, especially in the context of high myopia, it is essential to remain vigilant and consult with your eye care provider if symptoms persist or worsen. Regular monitoring and proactive management are key to maintaining your eye health. If you have any further concerns or notice new symptoms, do not hesitate to reach out to your eye doctor for guidance.

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