Visual Distortions: Questions on Eye Health and Diagnosis - Ophthalmology

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Distortion of horizontal straight lines in the left eye?


Hello Dr.
Wang, I would like to follow up on my previous question.
I have self-checked using a chart, and while focusing on the central black dot from a distance of 30 cm, I am unsure if it is a psychological effect or not, but I feel a slight indentation at a distance of 6-7 spaces to the right of the central point.
It is not very obvious.
I would like to ask a few more questions:
1.
Since I had an eye examination two days ago and found that there were no issues with the retina or the macula, could there still be problems with the retina or macula that would not be detectable even with a fundoscopic examination (where the doctor uses a type of magnifying lens after administering dilating drops)? Is fundus photography the only way to conduct a comprehensive examination?
2.
How can I prevent the vitreous detachment from worsening? Since the area of detachment is in front of the macula, laser treatment cannot be used to stabilize it.
3.
Is it possible for this type of visual distortion to return to normal?
4.
If it is confirmed that there are no issues with the macula, what further examinations should I undergo?

Xiao Zuo, 30~39 year old female. Ask Date: 2009/11/17

Dr. Wang Zhishun reply Ophthalmology


Hello: As you mentioned, there is a slight indentation located 6-7 grid spaces to the right of the center point of the chart, which likely rules out the possibility of macular degeneration.
Fundus photography is indeed the most important tool for a comprehensive examination of the retina and macula.
While the ophthalmoscope has its limitations, if the distortion in your vision persists, I recommend undergoing a central visual field test.
As for the possibility of recovery, it is not guaranteed.
Some cases of macular degeneration may still exhibit visual distortion even after treatment.
Regarding vitreous detachment, there is no effective method to prevent its progression; the claims circulating in the market are not accurate.
In fact, vitreous detachment is not as alarming as it may seem; people may be overreacting.

Reply Date: 2009/11/17

More Info


Hello! Thank you for your detailed questions regarding your eye health and the visual distortions you are experiencing. It’s understandable to be concerned about changes in your vision, especially when they involve symptoms like visual distortions or concerns about the retina and macula. Let’s address your questions one by one.

1. Limitations of Eye Examinations: While a thorough examination using an ophthalmoscope (the device you described) is a standard method for assessing the retina and macula, it is possible that some subtle issues may not be detected during this examination. Conditions such as early-stage macular degeneration or certain types of retinal tears may not be visible without more advanced imaging techniques. Fundus photography, optical coherence tomography (OCT), or fluorescein angiography can provide a more detailed view of the retinal layers and blood flow, allowing for a more comprehensive assessment. If you have ongoing concerns, discussing these imaging options with your eye care provider would be beneficial.

2. Managing Vitreous Detachment: Vitreous detachment is a common condition, especially as we age, and it often does not require treatment unless it leads to complications such as retinal tears or hemorrhages. Since your detachment is located in front of the macula, it’s essential to monitor it closely. Regular follow-ups with your eye doctor are crucial. They may recommend lifestyle changes, such as avoiding high-impact activities or positions that could exacerbate the condition, but typically, there is no specific treatment to prevent vitreous detachment from worsening. If you notice any new flashes of light or an increase in floaters, you should seek immediate medical attention.

3. Restoration of Distorted Vision: The potential for recovery from visual distortions depends on the underlying cause. If the distortion is due to vitreous changes, many people find that their symptoms improve over time as the brain adapts to the new visual input. However, if there are underlying retinal issues, the prognosis may vary. It’s essential to have ongoing evaluations to monitor any changes in your condition.

4. Further Investigations: If your macula has been cleared of any issues, and you are still experiencing visual distortions, it may be worthwhile to consider additional tests. These could include OCT, which provides cross-sectional images of the retina, or visual field testing to assess peripheral vision. Discussing your symptoms in detail with your eye care provider can help determine the most appropriate next steps.

In summary, while your initial examinations have not revealed significant issues, it’s crucial to remain vigilant and proactive about your eye health. Regular follow-ups and possibly more advanced imaging can help ensure that any potential problems are caught early. If you experience any new symptoms, such as sudden changes in vision or an increase in floaters, don’t hesitate to seek immediate care. Your vision is invaluable, and staying informed about your eye health is the best way to protect it.

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