Floaters: When to See an Eye Doctor - Ophthalmology

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Dr. Tsai, do I have floaters?


This morning, while I was out for a walk, I noticed a very small black floaters in my right eye that seems to drift in my line of sight and doesn't disappear.
I only discovered it today.
After returning home and looking at a bright screen, it became more apparent.
Currently, there is just one spot, but I’ve noticed that when I close one eye and then open it again, it briefly disappears, but it reappears when both eyes are open.
I would like to ask Dr.
Tsai if I need to see a doctor for this condition, or if there are any methods to restore my vision.
Are there ways to prevent it from worsening? Thank you very much!

Yo, 20~29 year old female. Ask Date: 2018/01/21

Dr. Cai Wenyuan reply Ophthalmology


Hello: To be diagnosed with floaters, it is necessary to rule out other retinal issues.
It is recommended to seek medical examination.
Wishing you safety and health.
Sincerely, Dr.
Tsai Wen-Yuan, Director of Ophthalmology, Taoyuan Hospital, Ministry of Health and Welfare.

Reply Date: 2018/01/21

More Info


When it comes to floaters in your vision, it's important to understand what they are and when you should seek medical attention. Floaters, or "vitreous opacities," are tiny specks or strands that drift through your field of vision. They are often more noticeable when looking at a bright background, such as a clear sky or a white computer screen. Floaters are typically caused by changes in the vitreous gel that fills the eye, which can occur as we age or due to other factors.

In your case, you mentioned noticing a small black speck in your right eye that appears when looking at bright areas. This is a common experience, especially if you have not noticed floaters before. While floaters are usually harmless, there are certain situations where they may indicate a more serious condition, such as a retinal tear or detachment.
Here are some signs that you should definitely see an eye doctor:
1. Sudden Increase in Floaters: If you notice a sudden increase in the number of floaters, especially if accompanied by flashes of light, this could indicate a retinal tear or detachment.

2. Flashes of Light: If you experience flashes of light in your peripheral vision, this can also be a sign of retinal issues.

3. Shadow or Curtain Effect: If you notice a shadow or curtain effect over your vision, this is a medical emergency and requires immediate attention.

4. Changes in Vision: Any sudden changes in your overall vision, such as blurriness or loss of vision, should prompt a visit to an eye care professional.

In your situation, since you have only recently noticed this small floater and it seems to disappear temporarily when you close one eye, it may not be an immediate cause for concern. However, it is always better to err on the side of caution. If the floater persists, increases in size or number, or if you experience any of the warning signs mentioned above, you should schedule an appointment with an eye doctor.

To help prevent further issues, here are some general tips:
- Regular Eye Exams: Regular check-ups with an eye care professional can help monitor your eye health and catch any potential issues early.

- Protect Your Eyes: Wear sunglasses to protect your eyes from UV rays, and take breaks when using screens to reduce eye strain.

- Stay Hydrated: Keeping your body well-hydrated can help maintain the health of your eyes.

- Healthy Diet: A diet rich in antioxidants, vitamins C and E, omega-3 fatty acids, and zinc can support eye health.

In conclusion, while floaters are often benign, it is crucial to be aware of the signs that warrant a visit to an eye doctor. If you have any concerns or if the floater persists, it is advisable to seek professional evaluation to ensure your eyes remain healthy.

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