Sectoranopia: A stroke in the lateral geniculate nucleus or optic radiations?

Huang, Minna; Ilsen, Pauline F.

doi:10.1016/j.optm.2006.11.013

Cited by 5 publications

(15 citation statements)

References 33 publications

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“… 4 6 Incomplete injury to the optic tract and the spatial spread of visual fibres in the optic tract can lead to incongruous contralateral homonymous hemianopia (HH). 6 A more distinctive pattern of sectoral optic atrophy with resulting ipsilateral temporal disc pallor and contralateral wedge-shaped pallor can also be observed. 6 17 …”

Section: Visual Stroke Syndromesmentioning

confidence: 98%

“… 6 A more distinctive pattern of sectoral optic atrophy with resulting ipsilateral temporal disc pallor and contralateral wedge-shaped pallor can also be observed. 6 17 …”

Section: Visual Stroke Syndromesmentioning

confidence: 98%

“…The optic radiations are predominantly supplied by the posterior and middle cerebral arteries 1 and the AChA. 6 Inferior fibres, known as Meyer’s Loop, 6 travel to the temporal lobe, while the superior and central nerve fibre bundles travel to the parietal lobes. 1 The termination of optic radiations is located in the visual striate cortex (V1) in the occipital lobe; superior and inferior to the calcarine fissure.…”

Section: Anatomy and Blood Supplymentioning

confidence: 99%

“… 18 Extensive LGN injury manifests as a complete HH. 6 Medial LGB infarction manifests as a wedge-shaped HH. 5 A hemi-hourglass shape in the horizontal midline of the visual field is a consequence of horizontal wedge-shaped homonymous sectoranopia.…”

Section: Visual Stroke Syndromesmentioning

confidence: 99%

“… 5 A hemi-hourglass shape in the horizontal midline of the visual field is a consequence of horizontal wedge-shaped homonymous sectoranopia. 6 Tsuda et al reported a case of an 81-year-old with diabetes presenting with left incongruous wedge-shaped HH secondary to right LGB infarction. 5 de Vries et al report the case of an 89-year-old woman presenting with right visual field symptoms of golden coloured balls with green borders, with subsequent development of a grid-like pattern consisting of black dots arranged symmetrically, both horizontally and vertically.…”

Section: Visual Stroke Syndromesmentioning

confidence: 99%

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Eyes and stroke: the visual aspects of cerebrovascular disease

Pula

Yuen

2017

Stroke Vasc Neurol

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A large portion of the central nervous system is dedicated to vision and therefore strokes have a high likelihood of involving vision in some way. Vision loss can be the most disabling residual effect after a cerebral infarction. Transient vision problems can likewise be a harbinger of stroke and prompt evaluation after recognition of visual symptoms can prevent future vascular injury. In this review, we discuss the visual aspects of stroke. First, anatomy and the vascular supply of the visual system are considered. Then, the different stroke syndromes which involve vision are discussed. Finally, topics involving the assessment, prognosis, treatment and therapeutic intervention of vision-specific stroke topics are reviewed.

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Section: Visual Stroke Syndromesmentioning

confidence: 98%

“… 6 A more distinctive pattern of sectoral optic atrophy with resulting ipsilateral temporal disc pallor and contralateral wedge-shaped pallor can also be observed. 6 17 …”

Section: Visual Stroke Syndromesmentioning

confidence: 98%

Section: Anatomy and Blood Supplymentioning

confidence: 99%

Section: Visual Stroke Syndromesmentioning

confidence: 99%

Section: Visual Stroke Syndromesmentioning

confidence: 99%

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Eyes and stroke: the visual aspects of cerebrovascular disease

Pula

Yuen

2017

Stroke Vasc Neurol

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Homonymous Horizontal Sectoranopia Caused by an Occipital Lobe Infarct

Preble

Epstein

Tannir

et al. 2019

Neuro-Ophthalmology

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Homonymous horizontal sectoranopia is a rare visual field defect that characteristically occurs after damage to the lateral geniculate nucleus (LGN). While there are many reports of homonymous horizontal sectoranopia resulting from LGN damage, there are very few reports of homonymous horizontal sectoranopia resulting from damage to other areas of the brain. We present a unique case of a patient with a homonymous horizontal sectoranopia with an occipital lobe infarct. Visual field and radiologic findings are presented. To our knowledge, this is one of the few reported cases of homonymous horizontal sectoranopia resulting from an infarct to the occipital lobe.

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Thalamic Infarcts and Hemorrhages

Amici¹

2012

Frontiers of Neurology and Neuroscience

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The anatomy and supply of thalamic arteries are briefly described here. Thalamic infarcts and small-size hemorrhages are classified according to their sites: (1) posterolateral, (2) anterolateral, (3) medial, and (4) dorsal. (1) Posterolateral hemorrhages or lateral thalamic infarcts are usually characterized by severe motor impairment and sensory loss. Transient reduced consciousness, vertical-gaze abnormalities, and small fixed pupils may be evidenced. (2) Patients with anterolateral hemorrhages or tuberothalamic artery infarcts present frontal-type neuropsychological symptoms associated with mild hemiparesis and hemihypesthesia. (3) Medially located hemorrhages or paramedian artery infarcts have decreased levels of consciousness, vertical- and horizontal-gaze abnormalities, amnesia, and abulia. (4) Dorsal hemorrhages or posterior choroidal artery infarcts present with minimal transient hemiparesis and hemihypesthesia; apraxia, aphasia, and amnesia have also been described.

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Sectoranopia: A stroke in the lateral geniculate nucleus or optic radiations?

Cited by 5 publications

References 33 publications

Eyes and stroke: the visual aspects of cerebrovascular disease

Eyes and stroke: the visual aspects of cerebrovascular disease

Homonymous Horizontal Sectoranopia Caused by an Occipital Lobe Infarct

Thalamic Infarcts and Hemorrhages

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