Retinal Issues: Blue and Purple Patterns in Vision - Ophthalmology

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Retinal issues


Hello, Doctor.
I have a question.
Sometimes when I wear my glasses to read or attend class (my glasses have some blue light and UV protection), I notice blue or purple circles or lines when looking at blank spaces on the page.
Is this related to retinal degeneration? I had an eye exam about a month ago, and the doctor mentioned that my retina is slightly thin but has not worsened.
Am I overthinking this situation? Thank you for taking the time to respond.

Hei Hei, 10~19 year old female. Ask Date: 2018/01/12

Dr. Cai Wenyuan reply Ophthalmology


Hello, regular check-ups are sufficient.
Thank you.
Wishing you peace and health.
Sincerely, Dr.
Tsai Wen-Yuan, Director of the Department of Ophthalmology, Taoyuan General Hospital, Ministry of Health and Welfare.

Reply Date: 2018/01/12

More Info


Hello! Thank you for your question regarding the visual phenomena you are experiencing while wearing glasses with blue light and UV protection. It’s understandable to be concerned about any changes in your vision, especially when they involve colors or patterns that you may not have noticed before.

From your description, it sounds like you are seeing blue or purple circles or lines when looking at blank spaces in your reading material. This phenomenon can be quite common and is not necessarily indicative of retinal degeneration. The visual disturbances you are experiencing could be related to several factors, including the way your eyes are processing light, the characteristics of the lenses in your glasses, or even the conditions under which you are reading.

Firstly, the blue and purple patterns you see could be a result of the way your brain interprets light and color. When you look at a blank or uniform background, your visual system may create afterimages or visual noise, especially if you have been focusing intently on text for an extended period. This is often exacerbated by fatigue or strain on your eyes, which can occur during prolonged reading or screen time.

Regarding your concern about retinal thinning, it’s reassuring to hear that your recent eye examination indicated that your retina is thin but stable and not worsening. Regular check-ups with your eye care professional are essential, especially if you have a history of retinal issues. They can monitor any changes and provide guidance on how to manage your eye health effectively.

It’s also worth noting that blue light, which is emitted from screens and artificial lighting, has been a topic of discussion regarding its potential effects on eye health. However, current research has not conclusively shown that blue light exposure leads to retinal damage or degeneration. While blue light can contribute to digital eye strain, the symptoms are typically temporary and can be alleviated with proper eye care practices, such as taking regular breaks (the 20-20-20 rule: every 20 minutes, look at something 20 feet away for 20 seconds) and ensuring adequate lighting while reading.

In terms of your glasses, if they are designed to filter blue light, they may alter the way certain colors appear to you. This could explain the perception of blue or purple lines or circles, especially in low-light conditions or when looking at bright backgrounds. If this visual phenomenon continues to concern you or if you notice any other changes in your vision, it would be prudent to discuss this with your eye care provider. They may suggest further tests or adjustments to your prescription or lens type.

Lastly, maintaining overall eye health is crucial. Consider incorporating eye-friendly nutrients into your diet, such as lutein and zeaxanthin, which are found in leafy greens and are known to support retinal health. Regular eye exams and being mindful of your screen time can also help protect your vision in the long run.

In summary, while the blue and purple patterns you are seeing can be concerning, they are likely not a direct indication of retinal degeneration, especially given your recent eye exam results. Continue to monitor your symptoms, practice good eye care habits, and consult with your eye care professional if you have any further concerns. Thank you for reaching out, and I hope this information helps clarify your situation!

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