Double Vision: Causes and When to See a Doctor - Ophthalmology

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Double vision, or diplopia, is a condition where a person sees two images of a single object. This can occur in one eye (monocular diplopia) or both eyes (binocular diplopia). Understanding the causes of double vision and knowing when to seek medical attention is crucial for effective management.

In your case, since you mentioned that the double vision occurs only when both eyes are open and that it resolves when you blink, it suggests that it may be related to a misalignment of the eyes or an issue with how the brain processes visual information from both eyes. This is often referred to as binocular diplopia, which can be caused by several factors, including:
1. Strabismus: This is a condition where the eyes are not properly aligned with each other. It can lead to double vision because the brain receives two different images from each eye. In some cases, this misalignment can be intermittent, which might explain why you can control it by blinking.

2. Neurological Issues: Conditions affecting the nerves that control eye movement, such as cranial nerve palsies, can lead to double vision. These conditions may arise from various causes, including diabetes, hypertension, or even trauma.

3. Refractive Errors: Sometimes, uncorrected vision problems, such as astigmatism, can cause visual distortions that may be perceived as double vision.

4. Eye Fatigue: Prolonged use of digital devices or reading can lead to eye strain, which may temporarily affect your ability to focus properly, resulting in double vision.

5. Corneal Issues: Problems with the cornea, such as irregularities or scarring, can also lead to visual distortions.

Given your history of experiencing double vision since childhood, it would be advisable to consult with an eye care professional. You should consider seeing an ophthalmologist or an optometrist, as they specialize in diagnosing and treating eye conditions. They can perform a comprehensive eye examination, which may include tests for eye alignment, visual acuity, and possibly imaging studies if a neurological cause is suspected.

When you visit the doctor, be prepared to discuss your symptoms in detail, including when they occur, how long they last, and any other visual disturbances you may experience. This information will help the doctor determine the underlying cause and recommend appropriate treatment options.

In some cases, treatment may involve corrective lenses, vision therapy, or even surgery, depending on the severity and cause of the double vision. If the condition is related to a neurological issue, further evaluation by a neurologist may be necessary.

In summary, double vision can arise from various causes, and since it has been a recurring issue for you, seeking medical advice is essential. An eye care professional will be able to provide a thorough evaluation and guide you toward the best course of action to manage your symptoms effectively.