Floaters and Visual Disturbances: A Guide for Patients

Floaters, wavy lines, and shadows in the left eye..?

Hello Doctor, my vision has always been 1.5 until now.
At the age of 41, I developed floaters in my right eye, and after a medical examination, it was confirmed that there was a slight tear.
The doctor also checked my left eye at that time, and both underwent laser treatment.
However, after the laser treatment, I noticed an increase in floaters.
I have been returning for check-ups every three months, and the doctor confirmed that there are no issues with my retina or macula.
Four months ago, a tear appeared in my left eye, and I underwent another retinal laser treatment.
Since then, I have experienced wavy patterns in the upper left and lower right of my vision when the light suddenly dims, lasting about 30 seconds to 1 minute before disappearing.
Additionally, when the light is bright, I see a circular shadow under my left eye for about one second when I open and close it.
I went to see the doctor again, and after examination, he said everything looks normal.
My questions are as follows:
1.
The doctor mentioned that I have physiological vitreous degeneration.
Are the linear floaters I see indicative of retinal detachment?
2.
Why did the floaters increase after the retinal laser treatment?
3.
What causes the wavy patterns to appear, and why do they occur with changes in light?
4.
Is it normal to see a circular shadow under my left eye for about one second when the light is bright? I did not have this issue before the laser treatment, including the wavy patterns.
5.
Will physiological floaters like mine become increasingly severe over time?
6.
Is there a close relationship between this condition and prolonged use of digital devices or blue light exposure?
I hope the doctor can clarify my doubts, as my vision has always been good, and this situation is quite uncomfortable for me.
I find myself constantly looking at the floaters, which has affected my daily life.
Thank you, Doctor!

Dean, 40~49 year old female. Ask Date: 2021/01/12

Dr. He Jianxian reply Ophthalmology

1.
After retinal detachment, it is impossible to regain vision without treatment.
2.
There is no correlation between retinal laser treatment and an increase in floaters.
3.
I cannot explain the occurrence of wavy lines and shadows based on your description, but it should not be related to the laser treatment.
4.
Physiological floaters can potentially worsen or improve.
5.
Floaters are likely not directly related to digital devices or blue light; they are primarily caused by vitreous degeneration.
Director He Jianxian, Department of Ophthalmology, Nantou Hospital.

Reply Date: 2021/01/12

More Info

Dear Patient,
Thank you for your detailed inquiry regarding your visual disturbances, particularly concerning floaters and the associated symptoms you've been experiencing. I understand how concerning these changes can be, especially given your previously good vision. Let’s address your questions one by one, and I will provide some additional context that may help you understand your condition better.

1. Are the floaters I see indicative of retinal detachment?
Floaters are often a result of the natural aging process of the vitreous gel in the eye, which can become more liquid and pull away from the retina, leading to the perception of floaters. The presence of floaters does not necessarily indicate retinal detachment, especially if your retina has been examined and found to be intact. However, any sudden increase in floaters or changes in vision should be evaluated by an eye care professional.

2. Why did the floaters increase after retinal laser treatment?
After laser treatment for retinal tears or holes, it is not uncommon for patients to notice an increase in floaters. This can occur due to the changes in the vitreous gel as it reacts to the laser treatment. The laser creates tiny burns that can lead to the formation of new floaters as the vitreous continues to change.

3. What causes the water wave phenomenon I experience?
The water wave sensation you describe, particularly in response to changes in lighting, may be related to the way your brain interprets visual signals from the retina. This phenomenon can occur due to the interaction between the vitreous gel and the retina, especially if there are areas of traction or if the vitreous is beginning to detach. It’s essential to monitor these symptoms, as they can sometimes indicate changes in the retina.

4. Is the circular shadow I see under bright light normal?
The circular shadow you experience when exposed to bright light may be related to the way light interacts with the vitreous or the retina. This could be a benign phenomenon, but it’s crucial to discuss these symptoms with your eye doctor, especially since they are new and were not present before your treatments.

5. Will my physiological floaters worsen over time?
Floaters can indeed become more noticeable with age or as the vitreous continues to change. While some people experience an increase in floaters, others may find that they become less bothersome over time as the brain adapts to the visual changes.

6. Is there a connection between prolonged screen time and my symptoms?
Prolonged use of screens can lead to digital eye strain, which may exacerbate symptoms like discomfort or visual disturbances. While there is no direct evidence linking screen time to the development of floaters, it is essential to practice good eye hygiene, such as taking regular breaks (the 20-20-20 rule: every 20 minutes, look at something 20 feet away for 20 seconds) and ensuring proper lighting when using screens.

In conclusion, while your symptoms are concerning, they are not uncommon for someone with a history of retinal issues and physiological changes in the eye. It is vital to maintain regular follow-ups with your eye care provider to monitor your condition. If you notice any sudden changes in your vision, such as flashes of light, a significant increase in floaters, or a shadow in your peripheral vision, seek immediate medical attention.

I hope this information provides clarity and reassurance regarding your visual health. Please feel free to reach out with any further questions or concerns.

Best regards,
Doctor Q&A Teams

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