Vision Changes: My Experience with New Glasses and Eye Strain

Prescription lens issues and visual problems?

Hello, Doctor.
Recently, I have been experiencing blurred vision when looking at close objects (text).
When I look at light sources (both sunlight and artificial light, day or night), I notice some halos and glare (but not colored; the halo and glare match the color of the light source).
I also feel a bit sensitive to light.
Overall, my vision feels different from before, and my eyes have started to feel fatigued.
However, this isn't a constant state; some days, my eyes feel more relaxed, and the halos seem to disappear, but then the next day, my vision is abnormal again.
I went to an optical store to have my vision rechecked, as it had been about six years since my last exam.
Previously, I had my left eye measured at -4.75 diopters with -0.75 astigmatism, due to being born prematurely and having amblyopia, which left me with very limited vision.
I have always relied on my left eye for seeing.
However, this time, the results showed my left eye at -3.25 diopters with -1.50 astigmatism.
My myopia decreased by 1.50 diopters, while my astigmatism increased by 0.75 diopters (the results were obtained using a machine and traditional methods with interchangeable lenses).
1.
Is it possible for my myopia to decrease that much?
2.
Could the symptoms I described be related to the changes in my vision test results, with my myopia decreasing and astigmatism increasing?
3.
After wearing the new glasses, I feel that close objects appear somewhat magnified, but mid-range and distant objects are blurry.
The staff at the optical store suggested wearing the new glasses for close work and using my old glasses for driving or when I don't need to see close up.
However, when I wear the new glasses, the halos and glare around light sources seem to have worsened.
I tried to adapt for two days, but the situation remained the same: close vision is okay, but mid to far vision is blurry with halos and glare.
On the third day, I switched back to my old glasses and wore them all day.
I felt more comfortable and less fatigued, and the issue with halos and glare around light sources seemed to disappear.
Currently, on the fourth day, I am back to wearing the new glasses.
I still experience light sensitivity and some eye fatigue, but it feels like my eye muscles are adjusting.
I plan to wear them for a few more days to see how it goes.
Thank you, Doctor, for taking the time to read this in detail.

Lin Xiansheng, 30~39 year old female. Ask Date: 2024/05/11

Dr. Liang Ce reply Ophthalmology

We recommend you seek medical consultation.
Wishing you good health.
Thank you!

Reply Date: 2024/05/11

More Info

Hello! Thank you for sharing your detailed experience regarding your vision changes and the challenges you're facing with your new glasses. It sounds like you're going through a complex situation that many people can relate to, especially those who have undergone significant changes in their vision prescriptions.

Firstly, it's important to understand that fluctuations in vision, especially when transitioning to new glasses, can be quite common. Your symptoms of blurred vision, light halos, and eye strain can stem from several factors, including changes in your prescription, the type of lenses used, and even how your eyes are adapting to these changes.

1. Prescription Changes: You mentioned that your left eye's prescription changed from -4.75 to -3.25, while your astigmatism increased from 0.75 to 1.50. Such a significant decrease in myopia (nearsightedness) is indeed possible, especially if there were previous inaccuracies in your prescription or if your vision has improved due to various factors, including age or changes in your eye health. However, it’s essential to ensure that these measurements are accurate, as discrepancies can lead to discomfort and visual disturbances.

2. Lens Adaptation: When you switch to a new prescription, your eyes need time to adapt. This adaptation period can vary from person to person. The symptoms you're experiencing—like halos around lights and increased eye strain—can be a result of your eyes adjusting to the new lens curvature and prescription. If the lenses are multifocal or progressive, the brain and eyes may take longer to adjust to the different focal points.

3. Visual Disturbances: The halos and glare you’re experiencing, especially in low-light conditions, can be attributed to several factors, including the lens design and the quality of the lenses. Some lenses may not handle light refraction as well as others, leading to these visual disturbances. If your new glasses are causing more glare than your old ones, it might be worth discussing with your optometrist about lens coatings that can reduce glare and improve clarity.

4. Eye Strain: The fatigue you feel could be due to a combination of factors: the new prescription, the lens design, and possibly the amount of time spent focusing on near tasks. It’s crucial to take regular breaks when using screens or reading, following the 20-20-20 rule: every 20 minutes, look at something 20 feet away for at least 20 seconds.

5. Temporary vs. Permanent Changes: It’s encouraging to hear that some days your vision feels better. This fluctuation can indicate that your eyes are still adjusting. However, if symptoms persist beyond a few weeks, it may be worth revisiting your optometrist to reassess your prescription and the fit of your glasses.

6. Recommendations: Given your experience, here are a few suggestions:
- Give It Time: Continue wearing your new glasses for a bit longer, as adaptation can take time. However, if discomfort persists, seek further evaluation.

- Consider a Follow-Up: Schedule a follow-up appointment with your optometrist to discuss your symptoms in detail. They may suggest adjustments to your prescription or lens type.

- Lens Quality: Ask about lens coatings that can reduce glare and improve visual comfort, especially if you spend a lot of time in front of screens or in varying light conditions.

- Eye Health Check: Since you have a history of eye issues, ensure regular check-ups to monitor your overall eye health.

In summary, while it’s normal to experience some discomfort when adjusting to new glasses, persistent issues should not be ignored. Your vision is crucial, and ensuring you have the right prescription and lens type is essential for your comfort and eye health. Don’t hesitate to advocate for your needs with your eye care provider. Best of luck, and I hope you find a solution that works for you!

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