Homonymous hemianopsia
Hemianopsia[edit | edit source]
Introduction[edit | edit source]
Hemianopsia, also known as hemianopia, is a loss of vision in half of the visual field of one or both eyes. The condition is typically classified by the affected side of the visual field and whether it affects one or both eyes. Homonymous hemianopsia is a common form where the same side of the visual field is lost in both eyes, indicating damage to the brain's visual pathways rather than the eyes themselves.
Types[edit | edit source]
There are several types of hemianopsia, each with unique characteristics:
- Homonymous hemianopsia: Loss of the same side of the visual field in both eyes.
- Bitemporal hemianopsia: Loss of the outer (temporal) fields of both eyes.
- Binasal hemianopsia: Loss of the inner (nasal) fields of both eyes.
Causes[edit | edit source]
Hemianopsia is most often caused by brain damage rather than issues within the eyes. Common causes include:
- Stroke
- Brain tumors
- Traumatic brain injury
- Neurological disorders
Symptoms[edit | edit source]
The primary symptom of hemianopsia is the inability to see objects in one half of the visual field. This can lead to difficulties with navigation, reading, and recognizing faces. Patients may also experience:
- Bumping into objects on the affected side
- Difficulty driving
- Increased clumsiness
Diagnosis[edit | edit source]
Diagnosis of hemianopsia involves a thorough eye examination and imaging studies of the brain, such as MRI or CT scans, to identify the underlying cause of the visual field loss.
Treatment[edit | edit source]
While there is no cure for hemianopsia, treatment focuses on managing symptoms and improving quality of life. Options may include:
- Visual rehabilitation therapy
- Prism glasses to expand the visual field
- Training to increase awareness of the affected visual field
Implications for Daily Life[edit | edit source]
Individuals with hemianopsia may need to make adjustments in their daily life to accommodate their visual field loss. This can include using assistive devices, modifying the home environment for safety, and adopting strategies to improve navigation and reading skills.
See Also[edit | edit source]
References[edit | edit source]
- "Visual Field Defects." American Academy of Ophthalmology.
- "Homonymous Hemianopsia—Pathways and Management." Journal of Neuro-Ophthalmology.
External Links[edit | edit source]
Homonymous hemianopsia Resources | ||
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