Can double vision be controlled?
Hello, doctor.
Is it normal to have difficulty seeing clearly when the eyes are moving? Recently, I noticed that I can induce double vision at a certain angle (though it feels uncomfortable and causes some strain), but it resolves when I return my gaze, like two images slowly overlapping back together.
Blinking immediately fixes it.
Is this normal? Additionally, is it normal for other objects to be out of focus when I concentrate on looking at something? (I have myopia and astigmatism in both eyes.)
Qi, 10~19 year old female. Ask Date: 2022/07/04
Dr. Gao Pilin reply Ophthalmology
Hello, Qi: Sometimes strabismus can cause this phenomenon, so I recommend getting it checked.
It is normal for other objects to be out of focus when you concentrate on looking at something specific.
Reply Date: 2022/07/04
More Info
Experiencing double vision, or diplopia, when moving your eyes can be concerning, and it is important to understand the underlying mechanisms and potential causes. In general, it is not considered normal to have persistent double vision when moving your eyes, especially if it occurs at specific angles or positions. However, transient double vision that resolves quickly upon blinking or adjusting your gaze may not be as alarming, but it still warrants attention.
When you move your eyes, the brain relies on the coordinated movement of both eyes to create a single, clear image. If there is a misalignment or a problem with the eye muscles, it can lead to double vision. This misalignment could be due to several factors, including muscle weakness, nerve issues, or even structural problems within the eye itself. In your case, if you can induce double vision at a specific angle and it resolves when you return your gaze to a neutral position, it might suggest a temporary misalignment or muscle fatigue rather than a permanent condition.
The sensation of seeing two images that gradually overlap back into one could indicate that your eye muscles are working to realign the images, which is a normal compensatory mechanism. However, if this occurs frequently or is accompanied by discomfort, such as eye strain or soreness, it is advisable to consult with an eye care professional. They can perform a thorough examination, including tests for eye alignment and muscle function, to determine if there is an underlying issue that needs to be addressed.
Regarding your question about focusing on one object while other objects appear out of focus, this is a common experience, especially for individuals with refractive errors like myopia (nearsightedness) and astigmatism. When you concentrate on a specific target, your eyes naturally adjust to focus on that object, which can cause peripheral objects to appear blurry. This is a normal visual phenomenon and is part of how our visual system prioritizes focus on what is most relevant to us at any given moment.
However, if you find that your ability to focus is significantly impaired or if you experience discomfort, it may be beneficial to have your prescription checked. Incorrect or outdated glasses can exacerbate issues with focusing and may contribute to symptoms like double vision or eye strain.
In summary, while transient double vision and peripheral blurriness can occur under certain conditions, they should not be ignored, especially if they are frequent or accompanied by discomfort. It is essential to seek a comprehensive eye examination to rule out any underlying conditions and to ensure that your vision correction is appropriate for your needs. Regular eye check-ups are crucial for maintaining eye health, particularly for individuals with existing refractive errors.
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