Transitory and permanent visual field defects induced by occipital lobe seizures

1999 ◽  
Vol 20 (5) ◽  
pp. 321-325 ◽  
Author(s):  
G. Valli ◽  
S. Zago ◽  
A. Cappellari ◽  
A. Bersano
Keyword(s):  
Visual Field ◽  
Occipital Lobe ◽  
Visual Field Defects ◽  
Field Defects

Clinical Study of the Visual Field Defects Caused by Occipital Lobe Lesions

2014 ◽  
Vol 37 (2) ◽  
pp. 102-108 ◽  
Author(s):  
Katsuhiko Ogawa ◽  
Hiroshi Ishikawa ◽  
Yutaka Suzuki ◽  
Minoru Oishi ◽  
Satoshi Kamei
Keyword(s):  
Clinical Study ◽  
Visual Field ◽  
Occipital Lobe ◽  
Visual Field Defects ◽  
Field Defects

Recovery of visual-field defects after occipital lobe infarction: a perimetric study

2010 ◽  
Vol 82 (6) ◽  
pp. 695-702 ◽  
Author(s):  
M. Celebisoy ◽  
N. Celebisoy ◽  
E. Bayam ◽  
T. Kose
Keyword(s):  
Visual Field ◽  
Occipital Lobe ◽  
Visual Field Defects ◽  
Field Defects

scholarly journals Relative Afferent Pupillary Defects in Homonymous Visual Field Defects Caused by Stroke of the Occipital Lobe Using Pupillometer

2017 ◽  
Vol 42 (3) ◽  
pp. 139-145
Author(s):  
Go Takizawa ◽  
Atsushi Miki ◽  
Fumiatsu Maeda ◽  
Katsutoshi Goto ◽  
Syunsuke Araki ◽  
...  
Keyword(s):  
Visual Field ◽  
Occipital Lobe ◽  
Visual Field Defects ◽  
Field Defects

Improvement of visual field defects after focal resection for occipital lobe epilepsy: case report

2018 ◽  
Vol 128 (3) ◽  
pp. 862-866 ◽  
Author(s):  
Takahiro Yamamoto ◽  
Tadashi Hamasaki ◽  
Hideo Nakamura ◽  
Kazumichi Yamada
Keyword(s):  
Visual Cortex ◽  
Visual Field ◽  
Occipital Lobe ◽  
Neurological Deficits ◽  
Visual Field Defects ◽  
Epileptic Focus ◽  
Visual Aura ◽  
Occipital Lobe Epilepsy ◽  
The Right ◽  
Field Defects

Improvement of visual field defects after surgical treatment for occipital lobe epilepsy is rare. Here, the authors report on a 24-year-old man with a 15-year history of refractory epilepsy that developed after he had undergone an occipital craniotomy to remove a cerebellar astrocytoma at the age of 4. His seizures started with an elementary visual aura, followed by secondary generalized tonic-clonic convulsion. Perimetry revealed left-sided incomplete hemianopia, and MRI showed an old contusion in the right occipital lobe. After evaluation with ictal video-electroencephalography, electrocorticography, and mapping of the visual cortex with subdural electrodes, the patient underwent resection of the scarred tissue, including the epileptic focus at the occipital lobe. After surgery, he became seizure free and his visual field defect improved gradually. In addition, postoperative 123I-iomazenil (IMZ) SPECT showed partly normalized IMZ uptake in the visual cortex. This case is a practical example suggesting that neurological deficits attributable to the functional deficit zone can be remedied by successful focal resection.

scholarly journals Migraine-Like Positive Visual Phenomena Related to Focal Cortical Lesions with Undetectable Visual Field Defects

2021 ◽  
pp. 653-658
Author(s):  
Amir Vosoughi ◽  
Andrew Micieli ◽  
Jonathan A. Micieli
Keyword(s):  
Visual Field ◽  
Visual Fields ◽  
Occipital Lobe ◽  
Visual Disturbance ◽  
Visual Field Defects ◽  
Cortical Lesions ◽  
Visual Aura ◽  
Visual Phenomena ◽  
History Of ◽  
Field Defects

Migraines are commonly associated with a visual aura that has a characteristic clinical presentation. Cortical lesions within or in close proximity to the retrochiasmal visual pathways may also present in a manner that mimics migrainous visual phenomena and, in some cases, may be too small to manifest with a visual field defect on formal testing. We present 4 patients (3 females and 1 male) with an average age of 48.5 (range 28–67) years who had migraine-like visual disturbances related to a right temporal meningioma, occipital cavernoma, occipital lobe infarction, and demyelination in the optic radiations, which was the presenting sign of multiple sclerosis. No patient underwent neurosurgical intervention, and 1 patient (occipital lobe infarct) had complete resolution of the symptom after initial presentation. All patients had normal visual fields at follow-up and no thinning evident on optical coherence tomography. Our cases emphasize the importance of a history in assessing patients with transient positive visual phenomena and identify pathology that may present without visual field defects. Clinical features that should raise a doubt about a diagnosis of migraine visual aura include the absence of headache, brief visual disturbance lasting <5 min or those lasting >60 min, and age >40, especially with no past medical history of migraine.

scholarly journals Central Visual Field Defects in Patients with Distinct Glaucomatous Optic Disc Phenotypes

2021 ◽  
Vol 223 ◽  
pp. 229-240
Author(s):  
Eren Ekici ◽  
Sasan Moghimi ◽  
Huiyuan Hou ◽  
James Proudfoot ◽  
Linda M. Zangwill ◽  
...  
Keyword(s):  
Visual Field ◽  
Optic Disc ◽  
Visual Field Defects ◽  
Central Visual Field ◽  
Field Defects
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