Eye Flashes and Floaters: Causes and Treatments

Q: Eye Flashes and Floaters: Causes and Treatments

Hello, Ah Yan： 1. It is usually unrelated to fatigue and is a normal physiological degeneration. 2. The eye drops are intended to alleviate discomfort in the eyes and are not related to the prevention of retinal detachment. 3. Most cases do not result in seque

Flashes in the eyes, retinal issues?

Dear Dr.
Gao,
I have myopia in both eyes, approximately 400 degrees.
A few months ago, while studying, I often strained my eyes, and about three months ago (in May of this year), I started experiencing floaters.
I went to an ophthalmologist for a fundus examination, and the doctor said there were no retinal tears.
However, the doctor prescribed "Winston" good vision eye suspension 0.2% (FLUOROMETHOLONE) and "Yingyuan" eye drops 0.25% (CHLORAMPHENICOL) for me to use (four times a day).
The doctor mentioned that if the floaters increased significantly or if I experienced flashes of light, I should return for another examination.
I haven't been very diligent about using the eye drops, averaging about once a day.
Three weeks ago (in mid-July), I noticed occasional fleeting white flashes in the corner of my eye, sometimes so brief that I almost didn't notice them, but there could be 1 to 6 more noticeable flashes in a day.
At other times, I occasionally feel a twitch in the corner of my eye (but without noticeable flashes).
Therefore, I went back to see the same doctor, who again examined my fundus and confirmed that there were no retinal tears.
He prescribed the same eye drops again.
I would like to ask Dr.
Gao the following questions:
1.
I researched that floaters are related to vitreous degeneration.
Is this connected to eye strain?
2.
The doctor mentioned that using the eye drops might help stabilize my eyes during this time.
Can the eye drops he prescribed prevent retinal detachment? Or can they help stabilize the process of vitreous detachment from the retina? Would you also recommend using the eye drops? How long should I use them?
3.
I read that flashes are a phenomenon of the vitreous pulling on the retina.
Given this situation, is it inevitable that one day the retina will be torn, or could the flashes gradually disappear?
4.
The doctor said to return if I experience frequent flashes.
How frequent is considered "frequent"? For example, how many times within an hour would qualify as frequent?
5.
The doctor mentioned that I should only return if I experience frequent flashes, but doesn't that indicate a serious condition? I researched and found information about preventive laser treatment.
Is it necessary, or does preventive laser treatment have side effects?
Thank you, Dr.
Gao, for taking the time to respond to my questions!

A Yan, 30~39 year old female. Ask Date: 2022/08/03

Dr. Gao Pilin reply Ophthalmology

Hello, Ah Yan: 1.
It is usually unrelated to fatigue and is a normal physiological degeneration.
2.
The eye drops are intended to alleviate discomfort in the eyes and are not related to the prevention of retinal detachment.
3.
Most cases do not result in sequelae, and symptoms will gradually improve.
4.
Measure based on the current condition; if there are more occurrences than now, it indicates a change in the condition, and an examination is necessary.
If there are multiple flashes in one hour, it also requires evaluation.
Typically, if there is a pathological condition, the flashes will be persistent.
5.
If laser treatment is necessary, the physician will recommend it; if not suggested, then observation is sufficient.

Reply Date: 2022/08/03

More Info

Understanding eye flashes and floaters is crucial for maintaining eye health, especially for individuals experiencing these symptoms. Based on your description, it seems you are dealing with a combination of floaters and flashes, which can be concerning but often have benign explanations.

1. Causes of Floaters and Flashes: Floaters are typically caused by changes in the vitreous humor, the gel-like substance that fills the eye. As we age, the vitreous can become more liquid and may pull away from the retina, leading to the perception of floaters. This process is known as vitreous detachment. Flashes, on the other hand, occur when the vitreous pulls on the retina, causing it to send signals to the brain that are perceived as flashes of light. While fatigue and prolonged screen time can exacerbate the perception of floaters and flashes, they are not direct causes of these phenomena.

2. Eye Drops and Their Efficacy: The eye drops prescribed to you, such as Fluorometholone and Chloramphenicol, are anti-inflammatory and antibiotic medications, respectively. While they may help with inflammation or infection, they do not directly prevent retinal detachment or stabilize the vitreous. The use of these drops should be as directed by your physician, but they are unlikely to alter the natural course of vitreous degeneration or prevent retinal issues. If you are not using them as prescribed, it may be beneficial to adhere to the recommended regimen for the best outcomes.

3. Risk of Retinal Detachment: The concern about flashes leading to retinal detachment is valid. However, not all flashes indicate an impending detachment. Many individuals experience flashes without any serious complications. It is essential to monitor the frequency and intensity of these flashes. If they become more frequent or are accompanied by a sudden increase in floaters or a shadow in your vision, it is crucial to seek immediate medical attention.
4. Frequency of Flashes: The term "frequent flashes" can vary, but generally, if you notice flashes occurring multiple times within an hour or if they disrupt your daily activities, it would be wise to consult your eye care provider. A sudden increase in the frequency of flashes or floaters can indicate a more serious condition that requires evaluation.

5. Preventive Measures: Regarding preventive laser treatment, it is typically reserved for individuals who show signs of retinal tears or detachments. If your retina is healthy and there are no tears, preventive laser treatment is usually not necessary. However, if your doctor identifies any risk factors during your examinations, they may discuss the option of laser treatment with you. It is essential to weigh the benefits against potential risks, as with any medical procedure.

In summary, while floaters and flashes can be alarming, they are often benign, especially if your retina has been evaluated and found to be intact. Regular check-ups with your eye care provider are essential to monitor any changes in your symptoms. If you notice any significant changes, such as an increase in the frequency of flashes or floaters, or if you experience any new visual disturbances, do not hesitate to seek medical advice. Maintaining good eye health through regular examinations and following your doctor's recommendations for eye care is vital.

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