Flashing Lights and Floaters After Retinal Laser Treatment

Q: Flashing Lights and Floaters After Retinal Laser Treatment

Hello： <br>1. <br>Is there a type of floaters that is similar to photopsia? Floaters typically present as small black dots or thread-like objects drifting in the visual field, rather than as flashes of light. <br>Photopsia is usually caused by physical changes in the retina, such

Laser treatment for retinal tears?

Hello, Doctor.
At the end of May and the beginning of June, I visited an ophthalmologist because I experienced intermittent flashes and visual disturbances in my right eye.
A few days prior to the visual disturbances, I had accidentally consumed an excessive amount of caffeine.
The examination revealed two prominent retinal tears in my left eye and a smaller tear in my right eye.
I underwent laser treatment for the retinal tears on the same day.
Subsequent follow-up visits showed no issues.
However, for the past week, I have been experiencing elongated flashes or similar visual disturbances in the middle of my right eye.
I returned for a dilated eye exam, and the doctor mentioned it was just floaters, stating that having floaters after the retinal tears were treated is normal.
The doctor also mentioned something about degeneration (I apologize for not recalling the details).
The doctor likened it to having a hole in a pair of pants and patching it with fabric, which still leaves some fraying.
I would like to ask if there are types of floaters that resemble flashes.
The way these flashes have appeared this time is different from the end of May and early June; previously, they occurred intermittently, but now they seem to appear after a period of minimal eye movement.
What could be the reason for this? I have a small cyst on the right side of my brain, which has caused seizures.
Should I be concerned that these new flashes indicate an eye problem again, or could they be related to my brain condition or seizures? The flashes are not constant, but they occur more frequently when using my phone compared to watching TV or using the computer.
Should I be worried that there might be another issue with my eyes?
The doctor suggested taking fish oil to supplement DHA, but since I follow a strict vegan diet, could you recommend other methods to supplement DHA that have a higher absorption rate? Thank you, Doctor.

KJ, 20~29 year old female. Ask Date: 2023/09/04

Dr. Gao Pilin reply Ophthalmology

Hello:
1.
Is there a type of floaters that is similar to photopsia? Floaters typically present as small black dots or thread-like objects drifting in the visual field, rather than as flashes of light.
Photopsia is usually caused by physical changes in the retina, such as tears or retinal detachment, leading to the sensation of flashes when the retina is stimulated.
The symptoms and causes of the two conditions are different.
2.
What could cause variations in the way photopsia occurs? The manifestation of photopsia may vary depending on an individual's retinal condition and the nature of the stimulus.
Sometimes, photopsia may occur after eye movement, which could be due to certain areas of the retina being stimulated during movement.
However, a detailed assessment by an ophthalmologist is needed to determine the exact cause.
3.
Could photopsia be related to brain issues or epilepsy? Photopsia is typically associated with retinal problems, but it can also be influenced by brain issues, especially when these affect the function of the retina.
You mentioned having a small brain cyst and epilepsy; these factors may be related to photopsia, but a thorough medical evaluation is necessary to confirm this.
4.
Does an increased frequency of photopsia while using a mobile phone indicate other eye problems? An increased frequency of photopsia while using digital devices like mobile phones may be due to the brighter screens, which can easily stimulate the retina.
However, this does not necessarily indicate other eye problems; it is more likely that specific areas of the retina are sensitive to light.
If the frequency of photopsia increases, it is still advisable to consult your ophthalmologist.
5.
The doctor recommended DHA supplementation, but you are vegan.
Are there alternative supplementation methods? Vegans can supplement with plant-based sources of omega-3 fatty acids, such as flaxseed oil or flaxseeds, which contain alpha-linolenic acid (ALA) that can be converted into DHA in the body.
Additionally, some plant-based nutritional supplements also contain DHA and can serve as vegan options.
Please discuss with a nutritionist or physician to choose a suitable DHA supplementation method to ensure your nutritional needs are met.

Reply Date: 2023/09/04

More Info

Flashing lights and floaters can be concerning symptoms, especially after undergoing retinal laser treatment. Based on your description, it seems you have experienced a series of visual disturbances following your treatment for retinal tears. Let's break down your concerns and provide some clarity on the situation.

Firstly, it is important to understand that floaters and flashes of light are common occurrences, particularly in individuals who have had retinal issues or laser treatments. Floaters are typically caused by changes in the vitreous gel that fills the eye, which can become more prominent as we age or after certain eye treatments. When the vitreous gel pulls away from the retina, it can create the sensation of flashes of light, often described as "lightning streaks" or "flashes." This phenomenon is known as "posterior vitreous detachment" (PVD) and is generally benign, although it can be alarming.

In your case, the flashes you are experiencing in your right eye, particularly after movement, could be related to the ongoing changes in the vitreous gel as it continues to detach from the retina. The analogy your doctor used about a patch on a pair of pants is quite fitting; even after a repair (in your case, the laser treatment), the surrounding tissue may still exhibit some residual effects, such as floaters or flashes, as the vitreous continues to settle.

Regarding your question about whether floaters can resemble flashes, the answer is yes. Floaters can sometimes cast shadows on the retina, which may be perceived as flashes of light, especially under certain lighting conditions or when moving your eyes quickly. The fact that you notice these flashes more when using your phone could be due to the increased focus and strain on your eyes, which can make you more aware of these visual disturbances.

As for your concern about the small cyst in your brain and its potential connection to your visual symptoms, it is essential to differentiate between neurological and ocular issues. While certain neurological conditions can cause visual disturbances, the type of flashes you describe is more consistent with ocular phenomena related to the retina and vitreous. However, if you experience any new symptoms, such as changes in vision, headaches, or seizures, it is crucial to consult your neurologist or ophthalmologist for further evaluation.

In terms of dietary supplements, particularly for DHA (docosahexaenoic acid), which is beneficial for eye health, there are plant-based sources available. Algal oil is a great alternative for those following a vegan or vegetarian diet, as it provides a direct source of DHA without the need for fish. Additionally, you can consider incorporating flaxseeds, chia seeds, and walnuts into your diet, as they are rich in alpha-linolenic acid (ALA), which the body can convert to DHA, albeit at a lower efficiency.

In summary, while the flashes and floaters you are experiencing can be concerning, they are often a normal part of the healing process after retinal laser treatment. It is essential to monitor your symptoms and maintain regular follow-ups with your eye care provider. If you notice any significant changes or worsening of your symptoms, do not hesitate to seek medical advice. Meanwhile, consider dietary adjustments to support your eye health, and explore plant-based sources of DHA to complement your vegan lifestyle.

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