Experiencing Bright Spots in Dark Rooms: Eye Health Concerns Explained

A light (or light spot?!) appears at the outer corner of the right eye in the dark?

Hello, recently after entering a dark room and sitting in the same position, I have noticed a bright yellow light appearing at the tail of my right eye.
It seems like a light spot, not a flash, and lasts for about a second, occurring one to two times each time.
It typically appears after a two to three second interval, usually when transitioning directly from a well-lit area to a completely dark room.
I have not experienced this before, and I had an eye examination over seven months ago that showed no issues.

Previously, in a bright environment, I saw several light spots quickly darting around, but they disappeared when I looked directly at them; this happened about four months ago, and they have not reappeared since.
I had asked you about this before, and you suggested monitoring the situation.
I would like to seek your advice again, thank you.

I have myopia in both eyes, measuring around 200 and slightly over 200 degrees, and I also experience floaters and dry eyes.
I would like to know if taking Goji Berry and Chrysanthemum Pills would be beneficial.
Additionally, I have been having trouble sleeping lately, which has made my eyes quite fatigued.
Thank you.

Niming, 20~29 year old female. Ask Date: 2022/02/28

Dr. He Jianxian reply Ophthalmology

Your condition can be monitored further.
If you have any concerns, you can still visit an ophthalmologist for a dilated eye exam.
As for the effectiveness of taking Qi Ju Di Huang Wan, I am unable to answer that due to my lack of knowledge in traditional Chinese medicine.
Director He Jianxian, Ophthalmology Department, Nantou Hospital.

Reply Date: 2022/02/28

More Info

Experiencing bright spots or flashes of light in dark environments can be concerning, especially for individuals with pre-existing eye conditions such as high myopia (nearsightedness) and floaters. Your description of seeing bright yellow spots or light points when transitioning from a well-lit area to a dark room is not uncommon, and it can be attributed to several factors related to how our eyes adapt to changes in lighting conditions.

When you move from a bright environment to a dark one, your eyes undergo a process called "dark adaptation." This process involves the dilation of the pupils and the adjustment of photoreceptor cells in the retina to optimize vision in low-light conditions. During this transition, it is possible to experience visual phenomena such as bright spots or flashes, which can be a result of the overstimulation of the retinal cells that are still adjusting to the new lighting conditions. This is generally a temporary phenomenon and should resolve as your eyes adapt to the darkness.

However, given your history of high myopia and the presence of floaters, it is essential to remain vigilant about any changes in your vision. Floaters are typically harmless and are caused by changes in the vitreous gel of the eye, but they can sometimes indicate more serious conditions, especially if they are accompanied by flashes of light or a sudden increase in their number. If you notice any significant changes in your vision, such as a sudden increase in floaters, flashes of light, or a curtain-like shadow over your vision, it is crucial to seek an eye examination promptly.

Regarding your question about the potential benefits of consuming herbal supplements like "杞菊地黃丸" (a traditional Chinese herbal formula), while some people believe that such supplements can support eye health, scientific evidence supporting their efficacy is limited. These supplements often contain ingredients that are thought to promote overall eye health, but they should not be considered a substitute for regular eye care or medical treatment. If you are experiencing eye fatigue, it is essential to address the underlying causes, such as poor sleep quality, prolonged screen time, and inadequate breaks during visual tasks.

Sleep deprivation can significantly impact eye health and visual comfort. Lack of sleep can lead to dry eyes, increased eye strain, and overall discomfort. Ensuring you get adequate rest and managing screen time can help alleviate some of the symptoms you are experiencing. Additionally, practicing the 20-20-20 rule—taking a 20-second break to look at something 20 feet away every 20 minutes—can help reduce eye strain during prolonged periods of screen use.

In summary, while experiencing bright spots in dark environments can be a normal response to changes in lighting, it is essential to monitor your symptoms closely, especially given your history of high myopia and floaters. Regular eye examinations and open communication with your eye care provider are vital to maintaining your eye health. If you have any concerns or if your symptoms persist or worsen, do not hesitate to seek professional advice.

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