Diplopia
The medical term for double vision, a circumstance in which a person perceives a single object as a two distinct images. Diplopia can be vertical (images one above the other) or horizontal (images beside each other). Diplopia that is present when using both eyes and goes away when covering one EYE is binocular; diplopia that persists even when one eye is covered is monocular. Each has different clinical implications. Numerous health conditions can cause diplopia or have diplopia among their symptoms.
Causes of Monocular Diplopia
Causes of Monocular Diplopia
- ASTIGMATISM
- CATARACT
- DRY EYE SYNDROME
- KERATOCONUS
- PTERYGIUM
- RETINOPATHY
- STRABISMUS
Causes of Binocular Diplopia
- BRAIN injury (traumatic or STROKE)
- BRAIN TUMOR
- DIABETES
- cranial NERVE disorders
- GRAVES’S OPHTHALMOPATHY
- MULTIPLE SCLEROSIS
- MYASTHENIA GRAVIS
The diagnostic path begins with basic OPHTHALMIC EXAMINATION and NEUROLOGIC EXAMINATION. The findings of these exams determine the direction and nature of further testing. As diplopia is a symptom rather than a condition, treatment targets the underlying cause. In degenerative disorders such as MULTIPLE SCLEROSIS and MYASTHENIA GRAVIS, diplopia may persist or worsen as the condition progresses. For monocular diplopia, patching the affected eye may alleviate the double image.
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Colloid cysts are relatively rare intracranial lesions located in the rostral aspect of the third ventricle. They may produce acute hydrocephalus, brain herniation, and lead to death.
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