The eyes can perceive light even in dark environments?
Hello, doctor.
I would like to ask about a phenomenon where many people can still see pink or blue thread-like or dot-like lights when they close their eyes at night.
I used to experience this as well, but recently it has suddenly changed to where I can only see these visuals in dim light (or complete darkness) when my eyes are closed, and it seems to be getting worse.
Is this a sign of ocular pathology?
Sandy, 20~29 year old female. Ask Date: 2012/10/09
Dr. He Jianxian reply Ophthalmology
Hello: Seeing bright objects in front of you even with your eyes closed is likely an afterimage, which is a normal phenomenon.
There is no need to be concerned.
Wishing you peace and happiness.
Reply Date: 2012/10/09
More Info
Seeing colors or patterns with closed eyes, especially in low-light or dark environments, can be a perplexing experience. This phenomenon is often referred to as "phosphene," which is the perception of light without light actually entering the eye. Phosphenes can manifest as various colors, shapes, or patterns, and they can occur when the retina is stimulated by pressure, movement, or even spontaneously without any external light source.
In your case, the fact that you are noticing these colors more frequently and in darker environments may raise concerns about potential underlying eye issues. However, it is essential to understand that experiencing phosphenes is not inherently indicative of a serious eye condition. Many people experience this phenomenon at some point in their lives, and it can be a normal physiological response of the visual system.
That said, there are a few considerations to keep in mind. If the occurrence of these visual sensations is increasing in frequency or intensity, or if they are accompanied by other symptoms such as visual disturbances, flashes of light, or a decrease in vision, it would be prudent to consult an eye care professional. These could be signs of retinal issues, such as retinal detachment or other ocular conditions that may require further evaluation.
Additionally, the presence of other visual symptoms, such as blurred vision, difficulty focusing, or changes in color perception, should also prompt a visit to an eye specialist. Conditions like migraines can also cause visual disturbances, including the perception of colors or patterns, which may not be directly related to eye health but rather to neurological factors.
In summary, while seeing colors or patterns with closed eyes can be a normal phenomenon, especially in low-light conditions, an increase in frequency or the presence of additional symptoms warrants a thorough examination by an eye care professional. They can perform a comprehensive eye exam, including tests for retinal health, to rule out any potential issues and provide peace of mind. Regular eye check-ups are essential for maintaining eye health and addressing any concerns that may arise.
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