Post-Laser Complications in Retinal Treatment - Ophthalmology

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Post-retinal laser treatment issues?


Hello, Doctor.
I went to the clinic yesterday morning for an eye examination and discovered that the upper part of my right retina is thinning.
The doctor performed laser treatment, administering several dozen shots.
That day, I only felt a bit uncomfortable, but by this afternoon, I noticed that whenever I look slightly upward, I see a shadow in the lower right part of my vision.
It’s not a complete black spot blocking my view, but more like a piece of black gauze that is floating and changing.
When I look straight ahead or downward, it seems to disappear.
I would like to ask you, Doctor, what could this situation be? Is it a side effect from the laser treatment? (The laser was applied to the upper part of the right eye, but I see the shadow at the lower edge.) Also, is it harmful to the eyes to have so many laser shots? Thank you, Doctor.

Xiao Lin, 20~29 year old female. Ask Date: 2006/05/27

Dr. Liu Jingxian reply Ophthalmology


Hello, Sir:
Clinical experience shows that patients with high myopia, defined as having a refractive error greater than -6.00 diopters, experience elongation of the eyeball, which can lead to impaired choroidal circulation.
This results in thinning of the peripheral retina, making it more susceptible to retinal degeneration and even the development of retinal tears.
If retinal tears are detected early and treated promptly with laser photocoagulation, the risk of retinal detachment can be significantly reduced, thereby minimizing the potential impact on vision.

Since the laser treatment targets the peripheral retina, it generally does not affect central vision and is unlikely to cause other side effects.
However, there have been reports of rare complications.
Therefore, if the aforementioned symptoms persist or worsen, it is important to return for a follow-up examination as soon as possible.

In summary, it is essential to practice good eye care, avoid excessive eye strain, and prevent fatigue to protect your vision.
If you have any related concerns, please feel free to visit the ophthalmology department at the Taipei City Hospital, Zhongxing Branch.

Wishing you good health,
Dr.
Liu Jing-Hsi, Ophthalmology
Taipei City Hospital, Zhongxing Branch

Reply Date: 2006/05/27

More Info


After undergoing laser treatment for retinal issues, it is not uncommon to experience some visual disturbances, especially in the immediate aftermath of the procedure. The symptoms you are describing—seeing a black shadow or a floating dark area in your vision—can be concerning, but they may not necessarily indicate a serious complication.

Firstly, the appearance of a black shadow or dark area in your vision could be related to a few different factors. One possibility is that it is a result of the laser treatment itself. Laser procedures, such as those used to treat retinal tears or detachments, can cause temporary changes in the retina. These changes may include swelling or localized damage, which can lead to visual disturbances like the ones you are experiencing. The fact that you notice this shadow primarily when looking upwards may suggest that the area affected by the laser is still healing or reacting to the treatment.

Another possibility is that the black shadow could be related to the presence of floaters or other vitreous changes. After laser treatment, it is not unusual for patients to notice an increase in floaters, which are small specks or strands that float in the field of vision. These can sometimes cast shadows on the retina, leading to the perception of dark areas in your visual field.

Regarding your concern about the number of laser shots administered, it is important to understand that laser treatments are designed to be safe and effective. While it is true that excessive laser treatment can potentially cause damage to the retina, the number of shots given is typically determined by the specific condition being treated and the extent of the problem. Your ophthalmologist would have assessed the risks and benefits before proceeding with the treatment. If the procedure was deemed necessary, it is likely that the benefits outweighed the potential risks.

In terms of recovery, it is crucial to monitor your symptoms closely. If the black shadow persists, worsens, or is accompanied by other symptoms such as flashes of light, significant vision loss, or increased discomfort, you should contact your eye doctor immediately. These could be signs of complications that require further evaluation and management.

In the meantime, ensure that you follow any post-treatment care instructions provided by your ophthalmologist. This may include avoiding strenuous activities, protecting your eyes from bright lights, and attending follow-up appointments to monitor your recovery.

Lastly, if you have ongoing concerns about your vision or the effects of the laser treatment, do not hesitate to seek a second opinion from another eye care professional. It is essential to feel confident in your treatment plan and to address any worries you may have about your eye health. Regular communication with your healthcare provider is key to ensuring the best possible outcomes following retinal laser treatments.

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