scholarly journals Three Cases with Visual Hallucinations following Combined Ocular and Occipital Damage

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Bogusław Paradowski ◽  
Edyta Kowalczyk ◽  
Justyna Chojdak-Łukasiewicz ◽  
Aleksandra Loster-Niewińska ◽  
Monika Służewska-Niedźwiedź
Keyword(s):  
Literature Review ◽  
Optic Neuritis ◽  
Visually Impaired ◽  
Occipital Lobe ◽  
Visual Hallucinations ◽  
Charles Bonnet Syndrome ◽  
The Third ◽  
Retrobulbar Optic Neuritis

Charles Bonnet syndrome is an underrecognized disease that involves visual hallucinations in visually impaired patients. We present the cases of three patients who experienced complex visual hallucinations following various pathomechanisms. In two cases, diagnosis showed coexistence of occipital lobe damage with ocular damage, while in the third case it showed occipital lobe damage with retrobulbar optic neuritis. Theories of pathogenesis and the neuroanatomical basis of complex visual hallucinations are discussed and supported by literature review.

scholarly journals Vivid visual hallucinations in visually impaired: Charles bonnet syndrome – An Analog to “phantom-limb phenomenon”

2020 ◽  
Vol 0 (0) ◽  
pp. 0
Author(s):  
VimalKumar Paliwal ◽  
Ananya Das ◽  
GuttiNagendra Babu ◽  
Ankit Gupta ◽  
Vikas Kanaujia
Keyword(s):  
Visually Impaired ◽  
Phantom Limb ◽  
Visual Hallucinations ◽  
Charles Bonnet Syndrome

scholarly journals Unilateral Measles-Associated Retrobulbar Optic Neuritis without Encephalitis: A Case Report and Literature Review

2010 ◽  
Vol 2 (3) ◽  
pp. 128-132 ◽  
Author(s):  
Takehisa Hirayama ◽  
Ken Ikeda ◽  
Takanobu Hidaka ◽  
Riya Nagata ◽  
Yasuhiro Yoshii ◽  
...  
Keyword(s):  
Case Report ◽  
Literature Review ◽  
Optic Neuritis ◽  
Retrobulbar Optic Neuritis

The relation between charles bonnet syndrome and brain tumors (case report)

2011 ◽  
Vol 26 (S2) ◽  
pp. 984-984
Author(s):  
A. Ghaffarinejad ◽  
F. Estilaee
Keyword(s):  
Diabetes Mellitus ◽  
Type Ii Diabetes ◽  
Visually Impaired ◽  
Parietal Lobe ◽  
Type Ii Diabetes Mellitus ◽  
Type Ii ◽  
Visual Hallucinations ◽  
Major Depressive ◽  
Charles Bonnet Syndrome ◽  
The Brain

Charles Bonnet syndrome (CBS) is an under-diagnosed and under-reported disorder that involves formal, persistent, vivid and complex visual hallucinations in visually impaired individuals.Some neurological, psychiatric and internal disorders such as major depressive disorder, panic disorder, multiple sclerosis, temporal arthritis, delirium and type II diabetes mellitus have been reported which occur concurrently with CBS.A 72-year-old woman with a slowly progressive tumor (probably astrocytoma) in her right parietal lobe which evaluated with MRI will be described. She presents new symptoms after 2 years. These symptoms were complex, well-formed and vivid visual hallucinations. These visions were dead acquaintances. Patient was seeing them with open eyes. Visions lasted for minutes to hours. She mentioned visions she saw when she was awake. She had recognized these hallucinatory experiences were not real.The etiology of CBS is not described well and it is not recognized where the pathologic site in the brain is. Cases with CBS and concurrent brain pathologies can help us finding these relations. This is the first report of concurrent CBS and astrocytoma in parietal lobe.

HALLUCINATORY EXPERIENCES IN VISUALLY IMPAIRED INDIVIDUALS: CHARLES BONNET SYNDROME – IMPLICATIONS FOR RESEARCH AND CLINICAL PRACTICE

2018 ◽  
Vol 30 (2) ◽  
pp. 122-128 ◽  
Author(s):  
Darija Jurisic ◽  
◽  
Irena Sesar ◽  
Ivan Cavar ◽  
Antonio Sesar ◽  
...  
Keyword(s):  
Clinical Practice ◽  
Visually Impaired ◽  
Charles Bonnet Syndrome

FDG-PET Scanning Shows Distributed Changes in Cortical Activity Associated with Visual Hallucinations in Eye Disease

2019 ◽  
Vol 19 (1) ◽  
pp. 84-89 ◽  
Author(s):  
Lütfü Hanoglu ◽  
Sultan Yildiz ◽  
Tansel Cakir ◽  
Taha Hanoglu ◽  
Burak Yulug
Keyword(s):  
Visual Cortex ◽  
Fdg Pet ◽  
Underlying Mechanism ◽  
Posterior Cingulate Cortex ◽  
Eye Disease ◽  
Visual Hallucinations ◽  
Charles Bonnet Syndrome ◽  
Pet Scanning ◽  
Inferior Parietal Cortex ◽  
Visual Deafferentation

Background and Objective: Charles Bonnet Syndrome (CBS) has been defined as complex visual hallucinations (CVH) due to visual loss. The underlying mechanism of CBS is not clear and the underlying pathophysiology of the visual hallucinations in CBS patients and pure visually impaired patients is still not clear. </P><P> Methods: In our study, we have scanned three patients with eye disease and CBS (VH+) and three patients with eye disease without CBS (VH-) using FDG-PET. Results: Our results showed underactivity in the pons and overactivity in primary right left visual cortex and inferior parietal cortex in VH- patients and underactivity in left Broca, left inf frontal primary visual cortex and anterior and posterior cingulate cortex in VH+ patients relative to the normative 18FFDG PET data that was taken from the database consisting of 50 age-matched healthy adults without neuropsychiatric disorders. Conclusion: From this distributed pattern of activity changes, we conclude that the generation of visual hallucination in CBS is associated with bottom-up and top-down mechanism rather than the generally accepted visual deafferentation-related hyperexcitability theory.

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