What is associated with contralateral homonymous hemianopsia?

Contralateral homonymous hemianopsia is a visual field loss affecting the same side of both eyes, often resulting from damage to the visual pathways in the brain. Specifically, this condition is commonly associated with lesions in the occipital lobe or the optic tract.

The posterior cerebral artery supplies blood to the occipital lobe, which is responsible for processing visual information. Thus, a stroke in this artery can lead to damage in this area, resulting in contralateral homonymous hemianopsia. When the right posterior cerebral artery is affected, the patient may experience a loss of vision in the left visual field of both eyes, and vice versa.

The anterior cerebral artery primarily supplies the medial aspect of the frontal and parietal lobes, and strokes here would more likely lead to symptoms involving the lower extremity weakness and sensory loss rather than visual deficits. The middle cerebral artery affects the lateral aspects of these lobes and is more commonly associated with hemispatial neglect or facial and upper body weakness, not specifically with visual field deficits. Finally, vertebrobasilar strokes can lead to a variety of symptoms, but they do not typically present with homonymous hemianopsia as a primary manifestation, being more involved with brainstem