What Causes a Person to See Double Vision?

Experiencing double vision can be a concerning and disruptive issue. This condition occurs when your brain receives two separate images from each eye instead of a single, unified picture. As a result, you perceive two overlapping or side-by-side images of the same object. Double vision can affect your ability to perform everyday tasks and can be a symptom of an underlying condition.
 

Common Causes of Double Vision

Double vision can arise from various underlying conditions, ranging from refractive errors to neurological disorders. Here are some of the most common causes:
 

• Refractive Errors: Conditions like astigmatism, myopia (nearsightedness), or hyperopia (farsightedness) can cause double vision, particularly when the refractive error is significant or unequal between the two eyes.
• Eye Muscle Imbalance (Strabismus): Strabismus, commonly known as "crossed eyes" or "wandering eyes," occurs when the eye muscles fail to work in coordination, causing the eyes to point in different directions. This misalignment can lead to double vision.
• Thyroid Eye Disease (Graves' Disease): This autoimmune disorder can cause inflammation and swelling of the eye muscles, leading to double vision and other vision problems.
• Neurological Disorders: Conditions like multiple sclerosis, myasthenia gravis, and Parkinson's disease can affect the nervous system and cause double vision.

Symptoms Associated with Double Vision

In addition to the primary symptom of seeing two images of the same object, double vision can be accompanied by other symptoms, depending on the underlying cause. These may include:
 

• Headaches or eye strain
• Dizziness or vertigo
• Nausea or vomiting
• Difficulty focusing or blurred vision
• Eye pain or discomfort
• Sensitivity to light

Diagnosing Double Vision

When you visit an optometrist for double vision, they will conduct a comprehensive eye examination to determine the underlying cause. The diagnostic process may involve the following steps:
 

• Medical History: Your healthcare provider will ask about your symptoms, when the double vision started, any associated conditions, medications, and any recent injuries or illnesses.
• Visual Acuity Test: This test measures your ability to see clearly at various distances and can help identify refractive errors or other vision problems.
• Eye Muscle Function Tests: These tests evaluate the coordination and alignment of your eye muscles. Your healthcare provider may use specialized instruments or ask you to follow a target with your eyes to assess eye muscle function.
• Pupil Reaction Test: This test checks the response of your pupils to light, which can help identify potential neurological issues.
• Slit-Lamp Examination: This diagnostic tool allows your healthcare provider to examine the structures of your eyes in detail, including the cornea, iris, and lens.

Based on the results of these tests, your eye care provider will be able to diagnose the underlying cause of your double vision and recommend appropriate treatment options.
 

Treatment Options for Double Vision

The treatment for double vision depends on the underlying cause and severity of the condition. If double vision is caused by refractive errors, such as astigmatism or unequal refractive errors between the eyes, prescription glasses or contact lenses may help correct the issue. Special prism lenses can be incorporated into eyeglasses to help realign the visual images and reduce double vision.
 

Temporarily covering one eye with an eye patch or using occlusion therapy can alleviate double vision in some cases by forcing the brain to ignore the image from the misaligned eye.

If double vision is caused by an underlying medical condition, such as diabetes, thyroid disorders, or neurological conditions, treating the root cause may help resolve or improve the double vision.
 

The most appropriate treatment plan will be determined by your healthcare provider based on the specific cause, severity, and duration of your double vision, as well as your overall health and personal preferences.
 

Navigating Double Vision with the Help of Lookout Eyecare

By understanding the common causes, recognizing the associated symptoms, and seeking prompt medical attention, you can effectively manage and treat double vision. Double vision is often a symptom of an underlying condition, and addressing the root cause is crucial for effective treatment. Your optometrist will work with you to diagnose the underlying issue and develop a personalized treatment plan tailored to your specific needs.
 

If you are experiencing persistent or recurring double vision, schedule an appointment with an experienced optometrists. Early evaluation and treatment can help prevent further complications and improve your overall visual health and well-being. At Lookout Eyecare, our team of highly skilled professionals are dedicated to providing comprehensive eye care services, including the diagnosis and treatment of double vision. Visit our office in San Antonio, Texas, or call (210) 236-7273 to book an appointment today.