What causes unclear vision despite a stable prescription for glasses?

Question

Hello doctor,

I recently had an eye exam and got new glasses. My prescription remained the same for my left eye but changed slightly for my right. However, with my new glasses, I notice my left eye is not clear; there is a slight double vision outline for distant objects. When I wear my old glasses, I do not have this issue. I have tried ordering better lenses and revisited my optometrist, who rechecked my prescription and said everything is okay. Why do I see differently with my new glasses? Can the style of glasses affect eyesight due to the lens shape? I am really puzzled about what could be causing this issue.

Any advice would be greatly appreciated.

Thank you.

Answer 1

Hello,

Welcome to icliniq.com.

I understand your concern.

Based on your description, there are several potential reasons why you might be experiencing slight double vision and unclear vision in your left eye with the new glasses, despite having a stable prescription. A common issue could be that the optical centers of the lenses are not properly aligned with your pupils, which can cause visual disturbances such as double vision or blurriness. Additionally, even with a correct prescription, the quality of the lenses and any coatings applied can affect your vision. Lower-quality lenses or issues with anti-reflective coatings can sometimes cause visual distortions. Furthermore, the shape and size of the frames can indeed affect how you see through the lenses. Larger frames or those with significant curvature can cause peripheral distortions. If your new frames differ in shape or size from your old ones, this might be contributing to the issue.

Even though your optometrist rechecked your prescription and confirmed its accuracy, slight variations or inaccuracies in the lens manufacturing process could still be a factor. Ensure that the pupillary distance (PD) measurement is correct and matches the PD used for your old glasses. Verify that the lenses in your new glasses are made to the exact specifications of your prescription. Have the frames adjusted to ensure they sit correctly on your face? If the issue persists, consider seeking a second opinion from another optometrist. If possible, try using another pair of new glasses with the same prescription but a different frame style or lens type.

Thanks for using icliniq, and have a nice day.