Nonpsychotic Hallucinations and Impaired Vision: The Charles Bonnet Syndrome

2012 ◽

Vol 25 (3) ◽

pp. 505-506

Author(s):

Kurt Segers

Keyword(s):

Visual Impairment ◽

Vision Loss ◽

Peripheral Vision ◽

Visual Hallucinations ◽

Impaired Vision ◽

Charles Bonnet Syndrome ◽

History Of ◽

Potential Alternative ◽

Parkinson Patient ◽

History Of Parkinson’S Disease

ABSTRACTA patient with a history of Parkinson's disease and severe bilateral peripheral vision loss due to vitreous hemorrhages had complex visual hallucinations that persisted for three days and appeared every morning on awakening. The persistent nature of these hallucinations, the patient's preserved insight, and the presence of severe visual impairment was suggestive for Charles Bonnet syndrome rather than Parkinson-related hallucinations. A treatment with carbamazepine was started and proved to be successful. Physicians treating Parkinson patients should be familiar with Charles Bonnet syndrome and consider it as a potential alternative etiology for visual hallucinations, especially when the patient has severely impaired vision and when the hallucinations are sustained during wakefulness.

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

Psychiatria Danubina ◽

10.24869/psyd.2018.122 ◽

2018 ◽

Vol 30 (2) ◽

pp. 122-128 ◽

Cited By ~ 4

Author(s):

Darija Jurisic ◽

◽

Irena Sesar ◽

Ivan Cavar ◽

Antonio Sesar ◽

...

Keyword(s):

Clinical Practice ◽

Visually Impaired ◽

Charles Bonnet Syndrome

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The effects of impaired vision on simulated driving performance

10.26226/morressier.5785edc8d462b80296c9974a ◽

2016 ◽

Author(s):

Aurora van de Loo

Keyword(s):

Driving Performance ◽

Impaired Vision ◽

Simulated Driving

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Faculty Opinions recommendation of Anxiety and Charles Bonnet Syndrome.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.14267242.15779424 ◽

2012 ◽

Author(s):

Anne L Corn

Keyword(s):

Charles Bonnet Syndrome

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

Endocrine Metabolic & Immune Disorders - Drug Targets ◽

10.2174/1871530318666180830112709 ◽

2019 ◽

Vol 19 (1) ◽

pp. 84-89 ◽

Cited By ~ 3

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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de Haan, E. (2019). Impaired Vision: How the Visual World May Change After Brain Damage

Perception ◽

10.1177/0301006621991952 ◽

2021 ◽

pp. 030100662199195

Author(s):

Frans Verstraten

Keyword(s):

Brain Damage ◽

Visual World ◽

Impaired Vision

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Geriatric Conditions and Functional Disability among a National Community-Dwelling Sample of Older Adults in India in 2017–2018

Geriatrics ◽

10.3390/geriatrics6030071 ◽

2021 ◽

Vol 6 (3) ◽

pp. 71

Author(s):

Supa Pengpid ◽

Karl Peltzer

Keyword(s):

Major Depressive Disorder ◽

Depressive Disorder ◽

Chronic Conditions ◽

Sociodemographic Factors ◽

Community Dwelling ◽

Impaired Hearing ◽

Major Depressive ◽

Impaired Vision ◽

Geriatric Conditions ◽

Impaired Cognition

This study aimed to determine the prevalence of geriatric conditions and their association with disability in older community-dwelling adults in India. The cross-sectional sample consisted of 31,477 individuals (≥60 years) from the Longitudinal Ageing Study in India (LASI) Wave 1 in 2017–2018. Geriatric conditions assessed included injurious falls, impaired cognition, underweight, dizziness, incontinence, impaired vision and impaired hearing. More than two in five participants (44.3%) had no geriatric condition, 32.7% had one, 15.9% two and 7.1% had three or more geriatric conditions; 26.9% were underweight, 14.5% dizziness, 13.7% had impaired vision, 9.6% impaired hearing, 9.3% impaired cognition, 8.2% major depressive disorder, 5.7% injurious falls, 4.0% incontinence, and 7.4% had Activity of Daily Living (ADL) dependencies. In logistic regression analysis, adjusted by sociodemographic factors and the number of chronic conditions, we found a higher number of geriatric conditions, and a higher number of chronic conditions were associated with ADL dependencies. In a model adjusted for sociodemographic factors and the type of chronic conditions, we found that a higher number of geriatric conditions and heart disease, stroke, and bone or joint disorder were positively associated with ADL dependencies. The odds of ADL dependencies increased with impaired cognition, impaired vision, impaired hearing, and major depressive disorder. Impaired cognition, incontinence, impaired vision and major depressive disorder were positively associated with dressing, bathing, eating, transferring, and toileting dependency. In addition, impaired hearing was associated with transferring and toileting dependency. More than half of older adults in India had at least one geriatric condition. The prevalence of geriatric conditions was as high as the prevalence of chronic conditions, which in some cases were associated with disability. Geriatric conditions should be included in health care management.

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An overview of psychological and social factors in Charles Bonnet syndrome

Therapeutic Advances in Ophthalmology ◽

10.1177/25158414211034715 ◽

2021 ◽

Vol 13 ◽

pp. 251584142110347

Author(s):

Lee Jones ◽

Lara Ditzel-Finn ◽

Jamie Enoch ◽

Mariya Moosajee

Keyword(s):

Emotional Response ◽

Causal Mechanism ◽

Visual Hallucinations ◽

Cognitively Normal ◽

Charles Bonnet Syndrome ◽

Raising Awareness ◽

Normal Individuals ◽

The Social ◽

Recent Developments ◽

Insight Into

Charles Bonnet syndrome (CBS) is a condition where cognitively normal individuals with sight impairment experience simple and/or complex visual hallucinations. The exact pathogenesis of CBS is unknown; however, deafferentation is often recognised as a causal mechanism. Studies have provided insight into the multifaceted impact of CBS on wellbeing. Onset of CBS may cause distress among those believing visual hallucinations are indicative of a neurological condition. Hallucinatory content is often congruent with the emotional response. For example, hallucinations of a macabre nature typically result in a fearful response. Visual hallucinations may be highly disruptive, causing everyday tasks to become challenging. Clinical management relies on forewarning and pre-emptive questioning. Yet, knowledge and awareness of CBS is typically low. In this review, we provide a summary of the social and psychological implications of CBS and explore recent developments aimed at raising awareness and improving patient management.

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