Eye Flashes and Floaters: Causes and Solutions

Visual disturbances such as flashes of light?

Hello Doctor, here is the history of my eye condition:
1.
For about 1 to 2 years, I have experienced symptoms similar to blinking, although I know I am not actually blinking.
Usually, when this occurs, I am uncertain if I just blinked.
The light from my study lamp shines on a white wall, and when I look at this light, sometimes it appears as normal daylight white, while other times it turns yellowish.
Typically, if I close my eyes to rest or blink and look elsewhere, it returns to normal.
Aside from the lamp's light causing this sensation, I perceive the daylight white from regular fluorescent lights as consistent in color without any yellowish tint.
I also experience some floaters and flashes.
I have visited different ophthalmologists multiple times, and they have all given similar feedback, diagnosing me with allergic conjunctivitis, dry eye syndrome, and eye fatigue, advising me to blink more often to rest my eyes and apply warm compresses.
Some doctors even mentioned that the flashes I experience, which come and go, will continue to flash.
In June of last year, a doctor performed a dilated eye exam and said my eyes were normal, advising me to rest my eyes when these symptoms occur and not to overthink it.
Since then, I have felt more at ease and have not visited an ophthalmologist for over a year, nor have I experienced symptoms that made me feel anxious.
2.
On May 31 of this year, after waking up from a midday nap, I suddenly saw multiple white lines flashing in my vision at a distance.
I was stunned, then closed my eyes and got up to go to the bathroom.
When I opened my eyes, the white lines were gone, but the visual field was still shaky, without any specific shapes.
I closed my eyes again, and then it disappeared.
That evening at 7:30 PM, as I was lying down trying to fall asleep, I suddenly woke up again with the same symptoms, but this time it was black lines moving.
I closed my eyes again, and they disappeared.
The flashes I experienced that day were different from my previous flashes.
I deliberately tested it by keeping my eyes closed for 15 to 20 minutes while awake, and I did not experience any flashes.
I am puzzled as to why this only occurs upon waking.
The next morning, I had no symptoms.
By noon, I noticed slight symptoms and consulted a doctor, informing him that I had undergone a dilated eye exam elsewhere last year with healthy results.
After hearing this, he suggested I use eye drops, as it might be due to eye fatigue.

Doctor, what is your opinion regarding my symptoms? Prior to May 31, I had indeed been using the computer more frequently.
Since that day, any symptoms have been mild, mostly the same floaters and flashes as before.
Sometimes, my flashes occur at the corner of my eye, and other times they resemble a white line passing by.
Doctor, should I classify this as flashes or floaters?

Xiao Jing, 20~29 year old female. Ask Date: 2015/06/15

Dr. He Jianxian reply Ophthalmology

If you are experiencing a visual condition that is different from what you have previously encountered, it is advisable to undergo another dilated eye examination for confirmation.
The above is provided for your reference.

Reply Date: 2015/06/15

More Info

Understanding eye flashes and floaters can be quite complex, especially when symptoms vary over time and can be influenced by various factors. Based on your detailed description, it seems you are experiencing a combination of visual disturbances, including flashes of light and floaters, which can be concerning but are often benign.

Causes of Eye Flashes and Floaters
1. Vitreous Detachment: As we age, the vitreous gel that fills the eye can shrink and pull away from the retina. This process can cause flashes of light (photopsia) and floaters. The flashes may appear as streaks or spots of light, often more noticeable in low-light conditions.

2. Migraine: Even if you do not have a history of migraines, some individuals experience visual disturbances known as migraine aura, which can include flashes of light. These symptoms can occur without a headache.

3. Retinal Issues: While you mentioned that your retina was checked and deemed healthy, it’s important to note that retinal tears or detachments can also cause flashes and floaters. If the flashes are new or have changed in character, it’s crucial to have a thorough examination.

4. Eye Strain: Prolonged use of screens can lead to eye strain, which may exacerbate symptoms of floaters and flashes. This is often accompanied by dry eyes and discomfort.

5. Allergic Conjunctivitis and Dry Eye: Your history of allergic conjunctivitis and dry eye can contribute to visual disturbances. These conditions can lead to fluctuating vision, especially under different lighting conditions.

Your Symptoms
From your description, it seems that the flashes you are experiencing could be related to vitreous changes, especially since they occur upon waking or after periods of rest. The fact that they disappear after you close your eyes or look away suggests that they may not be related to a serious retinal issue, particularly since your previous examinations were normal.

The white lines you see could be a manifestation of the vitreous gel pulling on the retina, which is common and usually not a cause for alarm unless accompanied by other symptoms like a sudden increase in floaters, a shadow in your vision, or a curtain-like effect.

Recommendations
1. Regular Eye Exams: Continue to have regular check-ups with your eye care professional. If you notice any sudden changes in your vision, such as an increase in flashes or floaters, seek immediate attention.

2. Eye Care: Follow the advice given by your doctors regarding eye care. This includes taking breaks from screens, using lubricating eye drops for dry eyes, and practicing the 20-20-20 rule (every 20 minutes, look at something 20 feet away for 20 seconds).

3. Manage Allergies: If you have allergic conjunctivitis, managing your allergies can help reduce symptoms. This may include using antihistamines or other prescribed medications.

4. Stay Calm: It’s understandable to feel anxious about your vision, especially with a history of eye issues. However, many people experience flashes and floaters without any serious underlying conditions. Keeping a positive mindset and focusing on eye health can be beneficial.

5. Consult a Specialist: If your symptoms persist or worsen, consider consulting a retinal specialist for a more in-depth evaluation. They can provide additional insights and reassurance regarding your symptoms.

In conclusion, while your symptoms can be concerning, they are often benign and related to common eye conditions. Regular monitoring and eye care can help manage your symptoms effectively. If you have any further questions or concerns, don’t hesitate to reach out to your eye care provider for personalized advice.

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