Hemianopsia

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Hemianopsia
Synonyms	Hemianopia
Pronounce	N/A
Specialty	Neurology, Ophthalmology
Symptoms	Loss of vision in half of the visual field
Complications	N/A
Onset	N/A
Duration	N/A
Types	N/A
Causes	Stroke, brain tumor, traumatic brain injury, multiple sclerosis
Risks	N/A
Diagnosis	Visual field test, neuroimaging
Differential diagnosis	N/A
Prevention	N/A
Treatment	Vision therapy, prism glasses, occupational therapy
Medication	N/A
Prognosis	N/A
Frequency	Common in patients with stroke
Deaths	N/A

Paris as seen with left homonymous hemianopsia

Binasal Visual Field

Bitemporal Visual Field

Right Superior Quadrantanopia

Hemianopsia is a medical condition characterized by the loss of half of the visual field in both eyes. It is often caused by stroke, brain tumor, trauma, or neurological disorders.

Causes

Hemianopsia can be caused by a variety of conditions, including:

• Stroke: This is the most common cause of hemianopsia. A stroke occurs when blood flow to a part of the brain is cut off, causing brain cells to die. This can result in a loss of vision in one half of the visual field.
• Brain tumor: A tumor in the brain can press on the optic nerve or other parts of the brain involved in vision, causing hemianopsia.
• Trauma: Injury to the brain can also cause hemianopsia. This can occur as a result of a car accident, fall, or other type of injury.
• Neurological disorders: Certain neurological disorders, such as multiple sclerosis, can also cause hemianopsia.

Symptoms

The main symptom of hemianopsia is a loss of vision in one half of the visual field in both eyes. This can make it difficult to read, drive, or perform other tasks that require a full field of vision. Other symptoms can include:

• Difficulty seeing objects on one side
• Difficulty reading
• Difficulty navigating through space

Treatment

Treatment for hemianopsia depends on the underlying cause. If the condition is caused by a stroke, treatment may involve medications to prevent further strokes, physical therapy to help improve mobility, and occupational therapy to help improve daily living skills. If the condition is caused by a brain tumor, treatment may involve surgery to remove the tumor, radiation therapy, or chemotherapy. In some cases, vision therapy may be recommended. This involves exercises designed to improve visual skills and may help some people with hemianopsia regain some of their lost vision.

See also

• Visual field
• Optic nerve
• Visual impairment

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