Sudden Amblyopia in Adulthood: Causes and Treatment Options - Ophthalmology

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Amblyopia that suddenly appears in adulthood?


Hello, Doctor.
I have myopia of -600 degrees with astigmatism of -250 degrees in my left eye, and -700 degrees with astigmatism of -350 degrees in my right eye, with my left eye being the dominant eye.
The last time I had my glasses prescribed was about six years ago.
At that time, due to insufficient prescription, both eyes were able to achieve a corrected vision of 1.0, but based on the optometrist's recommendation, I did not get a full correction to 1.0 for each eye and instead received a correction to 0.9 for the right eye.
However, during my most recent vision examination, the ophthalmologist at the clinic mentioned that my current glasses prescription seems inadequate, particularly regarding astigmatism.
When using a trial frame for a new prescription, it was found that while my left eye could be corrected to 1.0, my right eye could only achieve a best-corrected vision of around 0.7 to 0.8.
Therefore, he diagnosed me with amblyopia in my right eye.
I would like to ask a few questions: 1.
Why would I, with no previous records of amblyopia, suddenly develop it in adulthood? 2.
Why are some people unable to achieve a corrected vision of 1.0 in one eye even when wearing glasses with sufficient myopia and astigmatism correction? 3.
Regarding my situation, the doctor only suggested "continued monitoring" without further intervention or treatment.
Is it already determined that my right eye cannot be corrected to a normal vision of 1.0, or could it improve after wearing the appropriate prescription for a period of time? Thank you very much!

Changxi, 30~39 year old female. Ask Date: 2024/01/03

Dr. Gao Pilin reply Ophthalmology


Hello:
1.
Causes of Amblyopia: Amblyopia is a visual impairment typically identified and treated during childhood.
However, new vision deterioration in adulthood may stem from issues related to the optic nerve, eyeball, retina, or other parts of the visual system, requiring further evaluation by a physician.
2.
Reasons for Not Achieving 1.0 Vision in One Eye: Sometimes, even with corrective lenses for myopia and astigmatism, one may still be unable to achieve 1.0 vision in one eye.
This could be due to other ocular issues, refractive anomalies, or problems with the optic nerve.
Occasionally, even after correction, achieving completely normal vision may not be possible.
3.
Will the Right Eye Ever Achieve 1.0 Vision?: Based on the current situation, it cannot be definitively stated that the right eye will never achieve 1.0 normal vision.
An ophthalmologist may conservatively recommend continued monitoring, as vision changes are possible, especially over time or due to other influencing factors, and refractive power may slightly vary.
Particularly in individuals with high myopia, the retina may gradually degenerate, which can affect vision.

Reply Date: 2024/01/03

More Info


Sudden amblyopia, or the sudden loss of vision in one eye, can be a concerning condition, especially when it occurs in adulthood. Amblyopia, often referred to as "lazy eye," is typically associated with childhood development, but it can manifest in adults under certain circumstances. Let's explore the potential causes, treatment options, and the implications of your specific situation.


Causes of Sudden Amblyopia in Adulthood
1. Refractive Errors: As you mentioned, you have significant myopia (nearsightedness) and astigmatism. If your glasses prescription is not adequate, especially for astigmatism, it can lead to visual discomfort and potentially contribute to amblyopia. The brain may begin to ignore the input from the weaker eye, leading to a decline in vision.

2. Eye Conditions: Conditions such as cataracts, retinal detachment, or other ocular diseases can cause sudden changes in vision. These conditions may not have been present during previous examinations but can develop over time.

3. Neurological Issues: Sometimes, amblyopia can be a symptom of neurological problems, such as a stroke or other conditions affecting the visual pathways in the brain.

4. Strabismus: If there is a misalignment of the eyes (strabismus), the brain may favor one eye over the other, leading to amblyopia. This can develop or become more pronounced in adulthood.


Treatment Options
1. Corrective Lenses: The first step in managing amblyopia is ensuring that you have the correct prescription for your glasses. If your right eye cannot achieve 1.0 vision even with adequate correction, it may be due to other underlying issues.

2. Vision Therapy: In some cases, vision therapy can help improve visual function. This may involve exercises to strengthen the weaker eye and improve coordination between the eyes.

3. Surgery: If there is a structural issue, such as strabismus, surgical intervention may be necessary to realign the eyes.

4. Monitoring: As your doctor suggested, continuous monitoring is essential. Sometimes, vision can improve with time and consistent use of the correct prescription.


Addressing Your Specific Questions
1. Why did I suddenly develop amblyopia as an adult?: Sudden amblyopia can occur due to changes in your eye health or refractive status. It’s possible that your brain has started to favor one eye due to inadequate correction or other visual disturbances.

2. Why can some people not achieve 1.0 vision even with proper lenses?: There are several reasons for this. The eye may have underlying structural issues, or there may be a neurological component affecting visual processing. Additionally, some individuals may have developed amblyopia without prior diagnosis, leading to a permanent reduction in visual acuity.

3. Is my right eye's vision improvement hopeless?: While it may seem discouraging, it is not necessarily hopeless. With the right corrective lenses and possibly additional treatments, there is potential for improvement. It is crucial to follow up with your eye care professional regularly to monitor your condition and adjust your treatment plan as needed.


Conclusion
Sudden amblyopia in adulthood can be alarming, but understanding the potential causes and treatment options is essential. It is crucial to work closely with your eye care provider to determine the best course of action for your specific situation. Regular follow-ups and adherence to prescribed treatments can lead to improvements in vision and overall eye health. If you have concerns about your vision or the effectiveness of your current treatment, do not hesitate to seek a second opinion or further evaluation from a specialist.

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