Double Vision and Blurry Vision: Causes and Concerns

Q: Double Vision and Blurry Vision: Causes and Concerns

Hello： Based on the symptoms you described, it is indeed possible that they are caused by astigmatism, but other potential eye conditions, such as early-onset cataracts or keratoconus, cannot be ruled out. <br>Visual problems caused by astigmatism may gradually worsen over time,

Diplopia, blurred vision

About seven months ago, my vision was checked and I had 575 in the left eye and 600 in the right eye, with over 100 diopters of astigmatism.
Currently, I am wearing daily disposable contact lenses with the appropriate prescription to control my myopia.
However, I feel that both my astigmatism and myopia have increased significantly.
During the day and at night, when looking at bright objects or those illuminated by light, I experience double vision and ghosting.
My daytime vision feels like it's only around 0.7, and at night (for example, when looking at non-illuminated signs), even with contact lenses, my vision feels like it's only about 0.6.
Additionally, even during the day, I can see more clearly in lit areas compared to unlit ones.
When looking at objects with double vision or those that are not too blurry, I can eliminate the double vision and see clearly by squinting, and I do not experience photophobia.
These symptoms have persisted for about a month.

Could these issues be caused by astigmatism, or could they be indicative of other conditions such as early-onset cataracts or keratoconus? Also, doctor, I won't be able to see an ophthalmologist this week; is it okay to wait until next week? I feel like my symptoms have worsened slightly in the past few days, and I'm a bit concerned.

Nìmíng, 10~19 year old female. Ask Date: 2024/04/13

Dr. Gao Pilin reply Ophthalmology

Hello: Based on the symptoms you described, it is indeed possible that they are caused by astigmatism, but other potential eye conditions, such as early-onset cataracts or keratoconus, cannot be ruled out.
Visual problems caused by astigmatism may gradually worsen over time, so it is advisable to see an ophthalmologist for an examination as soon as possible to obtain a clear diagnosis and develop an appropriate treatment plan.
The afterimages and double vision you mentioned may be related to the inaccuracies in how light focuses in the eye due to astigmatism.
The difference in visual perception between day and night, as well as seeing more clearly in well-lit areas, may be related to the brightness and color temperature of the light.
However, these symptoms could also be indicative of other eye issues, so further examination is necessary to determine the cause.
Considering the symptoms you described, I recommend seeking consultation and examination from an ophthalmologist as soon as possible.
If you feel that your symptoms are worsening, you should seek medical attention promptly, as delaying could have uncertain consequences.
Early diagnosis and treatment of vision problems can help prevent further deterioration.

Reply Date: 2024/04/13

More Info

Double vision, or diplopia, can be a concerning symptom that may arise from various underlying causes. In your case, it appears that you are experiencing both double vision and blurry vision, particularly under certain lighting conditions. Given your history of myopia (nearsightedness) and astigmatism, as well as the use of corrective lenses, it's essential to consider how these factors may contribute to your current symptoms.

Firstly, the presence of astigmatism can lead to distorted or blurred vision, especially when viewing bright lights or illuminated objects. This distortion occurs because the cornea or lens of the eye is not perfectly spherical, causing light to focus unevenly on the retina. As a result, you may see halos or ghosting effects around lights, particularly at night or in low-light conditions. The fact that you notice an improvement in clarity when squinting suggests that your eyes may be struggling to focus properly, and squinting reduces the amount of light entering the eye, which can temporarily enhance focus.

Your current prescription of -5.75 and -6.00 for myopia, along with astigmatism of over 1.00, indicates a significant refractive error. If your prescription is not up to date or if your eyes have changed since your last examination, this could lead to increased visual disturbances. It is crucial to have regular eye exams to ensure that your prescription is accurate and that your lenses are providing the best possible vision correction.

While astigmatism and myopia are common causes of blurry and double vision, other conditions should also be considered. Early cataracts can cause similar symptoms, including glare and halos around lights, particularly at night. Keratoconus, a condition where the cornea thins and bulges into a cone shape, can also lead to distorted vision and increased sensitivity to light. Both conditions can develop gradually and may not be immediately apparent during routine eye exams.

Given that your symptoms have persisted for about a month and seem to be worsening, it is advisable to seek an eye examination as soon as possible. While waiting a week may not pose an immediate risk, any significant changes in vision should be evaluated promptly. If you notice any additional symptoms, such as pain, redness, or sudden changes in vision, you should seek medical attention sooner.

In summary, your symptoms of double vision and blurry vision could be attributed to your existing refractive errors, but they may also indicate the presence of other ocular conditions such as early cataracts or keratoconus. It is essential to have a comprehensive eye examination to determine the exact cause of your symptoms and to update your prescription if necessary. Regular monitoring and timely intervention can help manage your vision effectively and prevent potential complications.

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