Visual Disturbances: What Those Colorful Spots Mean

Strange spots that appear and disappear?

When the eyes suddenly move from a bright area to a dark one and are slightly focused, they may see some colored dots that connect into lines and move continuously.
In very dark areas, these dots appear to move quickly, while in less dark areas, they exhibit a slow sliding motion.
Closing the eyes and then opening them or blinking causes this phenomenon to disappear and then reappear.
This condition has only occurred after using the computer for 3 to 4 hours, and this is the first time it has happened.
My eyesight is measured at 650 in one eye and 700 in the other, with astigmatism of about 10 degrees in both.
It seems that this phenomenon also occurs with my eyes closed.
When I remain in a brightly lit or dark environment, there are no issues, even after focusing on a fixed point for a long time.
My current job requires me to pay attention to colors and brightness, and I often look at the computer screen closely for extended periods.
What could be causing this phenomenon? Am I suffering from a serious eye condition? I am very worried and scared.

Jiao lü de ren, 20~29 year old female. Ask Date: 2007/10/17

Dr. Ke Meilan reply Ophthalmology

Hello! This condition is known as "floaters," which is a result of vitreous degeneration.
Don't worry too much, but it's important to have a doctor check it.
Make sure to confirm that the retina is intact; if it is, then there is no need for excessive concern.

Reply Date: 2007/10/17

More Info

The visual disturbances you are experiencing, particularly the colorful spots and lines that appear when transitioning from bright to dark environments, can be concerning. However, it is essential to understand that these symptoms are not uncommon and can often be attributed to several benign causes.

Firstly, the phenomenon you describe may be related to a condition known as "visual snow" or "phosphene." Visual snow is characterized by the perception of small, flickering dots in the visual field, similar to the static seen on a television screen. This condition can be exacerbated by prolonged screen time, which is consistent with your experience of noticing these symptoms after using the computer for several hours. Phosphenes, on the other hand, are the sensations of seeing light without light actually entering the eye, often triggered by pressure on the eyes or sudden changes in light conditions.

Another potential explanation for your symptoms could be related to the afterimages that occur when you move from a brightly lit area to a darker one. When your eyes are exposed to bright light, the photoreceptors in your retina become temporarily overstimulated. Upon entering a darker environment, these receptors may take some time to adjust, leading to the perception of colorful spots or trails as your vision stabilizes.

Additionally, the fact that these symptoms disappear when you blink or close your eyes suggests that they may be related to the way your visual system is processing information rather than a structural issue with your eyes. This is often seen in individuals who spend extended periods focusing on screens, leading to visual fatigue or digital eye strain. Symptoms of digital eye strain can include blurred vision, dry eyes, and discomfort, which may contribute to the visual disturbances you are experiencing.

Your refractive error, with myopia (nearsightedness) of -6.50 and -7.00 diopters and mild astigmatism, could also play a role in how your eyes perceive light and color. High levels of myopia can lead to changes in the structure of the eye, which might affect visual processing. However, if you have been regularly monitored by an eye care professional and have not been diagnosed with any serious conditions, it is likely that your symptoms are not indicative of a severe underlying issue.

It is crucial to maintain regular eye examinations, especially given your work involves prolonged computer use. Consider implementing the 20-20-20 rule: every 20 minutes, take a 20-second break to look at something 20 feet away. This practice can help reduce eye strain and may alleviate some of the symptoms you are experiencing.

If your symptoms persist or worsen, or if you notice any new symptoms such as flashes of light, significant changes in vision, or pain, it is essential to consult with an eye care professional. They can perform a comprehensive eye examination to rule out any potential underlying conditions and provide tailored advice based on your specific situation.

In summary, while your visual disturbances can be concerning, they are often related to benign causes such as visual fatigue, afterimages, or the effects of prolonged screen time. Regular eye care and proper visual hygiene can significantly help manage these symptoms.

Similar Q&A

Understanding Visual Disturbances: Are They Signs of Eye Conditions?

Hello, doctor. When I look at reflective light spots (similar to how a projector shines on a whiteboard), I see rainbow colors with slightly overlapping circles that extend vertically. Unlike others who see circular patterns, mine are unusually pronounced, and they become more ev...

Dr. Gao Pilin reply Ophthalmology
Hello Tay: This phenomenon may be caused by myopic astigmatism. You can try wearing glasses to see if it improves. For other issues, it is advisable to visit an ophthalmologist for a thorough examination to rule out any other conditions. In Taiwan, the ophthalmology department at...

Understanding Visual Disturbances: Causes and Potential Treatments

Hello, Director Yeh: Recently, I have noticed a sensation of movement when looking at things, particularly evident with the following: 1. The text and images on my computer screen (the higher the contrast, the more pronounced it is); 2. Static electronic billboards with scrollin...

Dr. Ye Boshou reply Neurology
Hello: That is poor coordination; do not focus your gaze for too long. Look at distant objects more often. If there are any issues, consult a neurologist.

Understanding Visual Disturbances: Symptoms and Solutions for Eye Issues

Hello, Doctor. I have several issues with my eyes that I would like to consult you about: 1. At night, when I look at bright lights, such as lamps or LED displays, I notice a layer that seems to float above them. For instance, with an LED display, it appears as if a line of whit...

Dr. Gao Pilin reply Ophthalmology
Hello, Student Yang: 1. This is caused by astigmatism. During the day, the pupils are smaller, so it is less noticeable. 2. This is the prism effect, and there is no need to worry. Regardless of whether you have experienced this phenomenon before, it is a normal prism effect bas...

Understanding Color Changes and Visual Disturbances in Eye Focus

1. When focusing on a point (such as during a conversation), there may be a phenomenon of peripheral color change, which normalizes after a few seconds. 2. Gazing at a white sky or screen may cause the perception of floating streaks. 3. There is slight photophobia in response to ...

Dr. He Jianxian reply Ophthalmology
1. I cannot explain why you are experiencing changes in color perception based on my experience. 2. This is known as floaters, and I recommend undergoing a dilated fundus examination. 3. Sensitivity to light varies from person to person; if the photophobia is not severe, it s...